Chapter 9

Algebra for College Students · 248 exercises

Problem 9

For Problems \(1-22\), graph each of the polynomial functions. $$ f(x)=(x+1)^{4}+3 $$

5 step solution

Problem 9

For Problems \(1-20\), use the rational root theorem and the factor theorem to help solve each equation. Be sure that the number of solutions for each equation agrees with Property \(9.3\), taking into account multiplicity of solutions. $$ x^{3}-4 x^{2}+8=0 $$

6 step solution

Problem 9

For Problems 1-10, find \(f(c)\) by (a) evaluating \(f(c)\) directly, and (b) using synthetic division and the remainder theorem. $$ f(n)=2 n^{5}-1 \text { and } c=-2 $$

4 step solution

Problem 9

Use synthetic division to determine the quotient and remainder for each problem. $$ \left(x^{3}+2 x^{2}-7 x+4\right) \div(x-1) $$

4 step solution

Problem 10

For Problems \(1-20\), graph each rational function. Check first for symmetry, and identify the asymptotes. $$ f(x)=\frac{1}{x^{3}+x^{2}-6 x} $$

5 step solution

Problem 10

Graph each of the following rational functions: $$ f(x)=\frac{-3 x}{x+2} $$

4 step solution

Problem 10

For Problems \(1-22\), graph each of the polynomial functions. $$ f(x)=-x^{5} $$

4 step solution

Problem 10

For Problems \(1-20\), use the rational root theorem and the factor theorem to help solve each equation. Be sure that the number of solutions for each equation agrees with Property \(9.3\), taking into account multiplicity of solutions. $$ x^{3}-10 x-12=0 $$

5 step solution

Problem 10

For Problems 1-10, find \(f(c)\) by (a) evaluating \(f(c)\) directly, and (b) using synthetic division and the remainder theorem. $$ f(n)=3 n^{4}-2 n^{3}+4 n-1 \text { and } c=3 $$

4 step solution

Problem 10

Use synthetic division to determine the quotient and remainder for each problem. $$ \left(2 x^{3}-7 x^{2}+2 x+3\right) \div(x-3) $$

6 step solution

Problem 11

For Problems \(1-20\), graph each rational function. Check first for symmetry, and identify the asymptotes. $$ f(x)=\frac{x}{x^{2}+2} $$

4 step solution

Problem 11

Graph each of the following rational functions: $$ f(x)=\frac{-2}{x^{2}-4} $$

4 step solution

Problem 11

For Problems \(1-22\), graph each of the polynomial functions. $$ f(x)=(x-2)(x+1)(x+3) $$

4 step solution

Problem 11

For Problems \(1-20\), use the rational root theorem and the factor theorem to help solve each equation. Be sure that the number of solutions for each equation agrees with Property \(9.3\), taking into account multiplicity of solutions. $$ x^{4}+4 x^{3}-x^{2}-16 x-12=0 $$

7 step solution

Problem 11

For Problems \(11-20\), find \(f(c)\) either by using synthetic division and the remainder theorem or by evaluating \(f(c)\) directly. $$ f(x)=6 x^{5}-3 x^{3}+2 \text { and } c=-1 $$

5 step solution

Problem 11

Use synthetic division to determine the quotient and remainder for each problem. $$ \left(3 x^{3}+8 x^{2}-8\right) \div(x+2) $$

6 step solution

Problem 12

For Problems \(1-20\), graph each rational function. Check first for symmetry, and identify the asymptotes. $$ f(x)=\frac{6 x}{x^{2}+1} $$

4 step solution

Problem 12

Graph each of the following rational functions: $$ f(x)=\frac{1}{x^{2}-1} $$

5 step solution

Problem 12

For Problems \(1-22\), graph each of the polynomial functions. $$ f(x)=(x-1)(x+1)(x-3) $$

5 step solution

Problem 12

For Problems \(1-20\), use the rational root theorem and the factor theorem to help solve each equation. Be sure that the number of solutions for each equation agrees with Property \(9.3\), taking into account multiplicity of solutions. $$ x^{4}-4 x^{3}-7 x^{2}+34 x-24=0 $$

5 step solution

Problem 12

For Problems \(11-20\), find \(f(c)\) either by using synthetic division and the remainder theorem or by evaluating \(f(c)\) directly. $$ f(x)=-4 x^{4}+x^{3}-2 x^{2}-5 \text { and } c=2 $$

5 step solution

Problem 13

For Problems \(1-20\), graph each rational function. Check first for symmetry, and identify the asymptotes. $$ f(x)=\frac{-4 x}{x^{2}+1} $$

4 step solution

Problem 13

Graph each of the following rational functions: $$ f(x)=\frac{3}{(x+2)(x-4)} $$

5 step solution

Problem 13

For Problems \(1-22\), graph each of the polynomial functions. $$ f(x)=x(x+2)(2-x) $$

5 step solution

Problem 13

For Problems \(1-20\), use the rational root theorem and the factor theorem to help solve each equation. Be sure that the number of solutions for each equation agrees with Property \(9.3\), taking into account multiplicity of solutions. $$ x^{4}+x^{3}-3 x^{2}-17 x-30=0 $$

8 step solution

Problem 13

For Problems \(11-20\), find \(f(c)\) either by using synthetic division and the remainder theorem or by evaluating \(f(c)\) directly. $$ f(x)=2 x^{4}-15 x^{3}-9 x^{2}-2 x-3 \text { and } c=8 $$

5 step solution

Problem 13

Use synthetic division to determine the quotient and remainder for each problem. $$ \left(5 x^{3}-9 x^{2}-3 x-2\right) \div(x-2) $$

6 step solution

Problem 14

For Problems \(1-20\), graph each rational function. Check first for symmetry, and identify the asymptotes. $$ f(x)=\frac{-5 x}{x^{2}+2} $$

5 step solution

Problem 14

Graph each of the following rational functions: $$ f(x)=\frac{-2}{(x+1)(x-2)} $$

5 step solution

Problem 14

For Problems \(1-22\), graph each of the polynomial functions. $$ f(x)=(x+4)(x+1)(1-x) $$

5 step solution

Problem 14

For Problems \(1-20\), use the rational root theorem and the factor theorem to help solve each equation. Be sure that the number of solutions for each equation agrees with Property \(9.3\), taking into account multiplicity of solutions. $$ x^{4}-3 x^{3}+2 x^{2}+2 x-4=0 $$

6 step solution

Problem 14

For Problems \(11-20\), find \(f(c)\) either by using synthetic division and the remainder theorem or by evaluating \(f(c)\) directly. $$ f(x)=x^{4}-8 x^{3}+9 x^{2}-15 x+2 \text { and } c=7 $$

8 step solution

Problem 14

Use synthetic division to determine the quotient and remainder for each problem. $$ \left(x^{3}-6 x^{2}+5 x+14\right) \div(x-4) $$

4 step solution

Problem 15

For Problems \(1-20\), graph each rational function. Check first for symmetry, and identify the asymptotes. $$ f(x)=\frac{x^{2}+2}{x-1} $$

5 step solution

Problem 15

Graph each of the following rational functions: $$ f(x)=\frac{-1}{x^{2}+x-6} $$

5 step solution

Problem 15

For Problems \(1-22\), graph each of the polynomial functions. $$ f(x)=-x^{2}(x-1)(x+1) $$

5 step solution

Problem 15

For Problems \(1-20\), use the rational root theorem and the factor theorem to help solve each equation. Be sure that the number of solutions for each equation agrees with Property \(9.3\), taking into account multiplicity of solutions. $$ x^{3}-x^{2}+x-1=0 $$

5 step solution

Problem 15

For Problems \(11-20\), find \(f(c)\) either by using synthetic division and the remainder theorem or by evaluating \(f(c)\) directly. $$ f(n)=4 n^{7}+3 \text { and } c=3 $$

6 step solution

Problem 15

Use synthetic division to determine the quotient and remainder for each problem. $$ \left(x^{3}+6 x^{2}-8 x+1\right) \div(x+7) $$

7 step solution

Problem 16

For Problems \(1-20\), graph each rational function. Check first for symmetry, and identify the asymptotes. $$ f(x)=\frac{x^{2}-3}{x+1} $$

5 step solution

Problem 16

Graph each of the following rational functions: $$ f(x)=\frac{2}{x^{2}+x-2} $$

5 step solution

Problem 16

For Problems \(1-22\), graph each of the polynomial functions. $$ f(x)=-x(x+3)(x-2) $$

5 step solution

Problem 16

For Problems \(1-20\), use the rational root theorem and the factor theorem to help solve each equation. Be sure that the number of solutions for each equation agrees with Property \(9.3\), taking into account multiplicity of solutions. $$ 6 x^{4}-13 x^{3}-19 x^{2}+12 x=0 $$

6 step solution

Problem 16

For Problems \(11-20\), find \(f(c)\) either by using synthetic division and the remainder theorem or by evaluating \(f(c)\) directly. $$ f(n)=-3 n^{6}-2 \text { and } c=-3 $$

6 step solution

Problem 16

Use synthetic division to determine the quotient and remainder for each problem. $$ \left(2 x^{3}+11 x^{2}-5 x+1\right) \div(x+6) $$

6 step solution

Problem 17

Graph each of the following rational functions: $$ f(x)=\frac{2 x-1}{x} $$

6 step solution

Problem 17

For Problems \(1-22\), graph each of the polynomial functions. $$ f(x)=(2 x-1)(x-2)(x-3) $$

5 step solution

Problem 17

For Problems \(1-20\), use the rational root theorem and the factor theorem to help solve each equation. Be sure that the number of solutions for each equation agrees with Property \(9.3\), taking into account multiplicity of solutions. $$ 2 x^{4}+3 x^{3}-11 x^{2}-9 x+15=0 $$

6 step solution

Problem 17

For Problems \(11-20\), find \(f(c)\) either by using synthetic division and the remainder theorem or by evaluating \(f(c)\) directly. $$ f(n)=3 n^{5}+17 n^{4}-4 n^{3}+10 n^{2}-15 n+13 \text { and } c=-6 $$

4 step solution

Problem 17

Use synthetic division to determine the quotient and remainder for each problem. $$ \left(-x^{3}+7 x^{2}-14 x+6\right) \div(x-3) $$

4 step solution

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