Chapter 1
College Algebra · 657 exercises
Problem 7
Plot the given point in a rectangular coordinate system. $$(4,-1)$$
3 step solution
Problem 7
Solve each polynomial equation in by factoring and then using the zero-product principle. $$ 4 y^{3}-2=y-8 y^{2} $$
3 step solution
Problem 7
Solve each equation in Exercises \(1-14\) by factoring. $$3 x^{2}-2 x=8$$
3 step solution
Problem 7
In Exercises 1-12, graph the solutions of each inequality on a number line. $$x \leq 4$$
3 step solution
Problem 7
Let \(x\) represent the number. Write each English phrase as an algebraic expression. The quotient of 15 and a number
2 step solution
Problem 7
In Exercises \(1-16,\) solve and check each linear equation. $$ 7 x+4=x+16 $$
4 step solution
Problem 8
In Exercises \(1-8,\) add or subtract as indicated and write the result in standard form. $$15 i-(12-11 i)$$
3 step solution
Problem 8
Solve each quadratic inequality in Exercises \(1-28\) and graph the solution set on a real number line. Express each solution set in interval notation. $$ x^{2}+x-6>0 $$
4 step solution
Problem 8
Plot the given point in a rectangular coordinate system. $$(3,-2)$$
4 step solution
Problem 8
Solve each polynomial equation in by factoring and then using the zero-product principle. $$ 9 y^{3}+8=4 y+18 y^{2} $$
3 step solution
Problem 8
Solve each equation in Exercises \(1-14\) by factoring. $$4 x^{2}-13 x=-3$$
3 step solution
Problem 8
In Exercises 1-12, graph the solutions of each inequality on a number line. $$x \leq 7$$
3 step solution
Problem 8
Let \(x\) represent the number. Write each English phrase as an algebraic expression. The quotient of a number and 15
2 step solution
Problem 8
In Exercises \(1-16,\) solve and check each linear equation. $$ 13 x+14=12 x-5 $$
3 step solution
Problem 9
In Exercises \(9-20,\) find each product and write the result in standard form. $$-3 i(7 i-5)$$
3 step solution
Problem 9
Solve each quadratic inequality in Exercises \(1-28\) and graph the solution set on a real number line. Express each solution set in interval notation. $$ x^{2}-6 x+9<0 $$
4 step solution
Problem 9
Plot the given point in a rectangular coordinate system. $$(-4,0)$$
2 step solution
Problem 9
Solve each polynomial equation in by factoring and then using the zero-product principle. $$ 2 x^{4}=16 x $$
4 step solution
Problem 9
Solve each equation in Exercises \(1-14\) by factoring. $$3 x^{2}+12 x=0$$
3 step solution
Problem 9
In Exercises 1-12, graph the solutions of each inequality on a number line.
$$-2
4 step solution
Problem 9
Let \(x\) represent the number. Write each English phrase as an algebraic expression. The sum of twice a number and 20
3 step solution
Problem 9
In Exercises \(1-16,\) solve and check each linear equation. $$ 3(x-2)+7=2(x+5) $$
3 step solution
Problem 10
In Exercises \(9-20,\) find each product and write the result in standard form. $$-8 i(2 i-7)$$
3 step solution
Problem 10
Solve each quadratic inequality in Exercises \(1-28\) and graph the solution set on a real number line. Express each solution set in interval notation. $$ x^{2}-2 x+1>0 $$
4 step solution
Problem 10
Plot the given point in a rectangular coordinate system. $$(0,-3)$$
3 step solution
Problem 10
Solve each polynomial equation in by factoring and then using the zero-product principle. $$ 3 x^{4}=81 x $$
3 step solution
Problem 10
Solve each equation in Exercises \(1-14\) by factoring. $$5 x^{2}-20 x=0$$
3 step solution
Problem 10
In Exercises 1-12, graph the solutions of each inequality on a number line. $$-3 \leq x<7$$
4 step solution
Problem 10
Let \(x\) represent the number. Write each English phrase as an algebraic expression. Twice the sum of a number and 20
3 step solution
Problem 10
In Exercises \(1-16,\) solve and check each linear equation. $$ 2(x-1)+3=x-3(x+1) $$
6 step solution
Problem 11
In Exercises \(9-20,\) find each product and write the result in standard form. $$(-5+4 i)(3+7 i)$$
4 step solution
Problem 11
Solve each quadratic inequality in Exercises \(1-28\) and graph the solution set on a real number line. Express each solution set in interval notation. $$ x^{2}-6 x+8 \leq 0 $$
4 step solution
Problem 11
Plot the given point in a rectangular coordinate system. $$\left(\frac{7}{2},-\frac{3}{2}\right)$$
4 step solution
Problem 11
Solve each radical equation in Check all proposed solutions. $$ \sqrt{3 x+18}=x $$
4 step solution
Problem 11
Solve each equation in Exercises \(1-14\) by factoring. $$2 x(x-3)=5 x^{2}-7 x$$
3 step solution
Problem 11
In Exercises 1-12, graph the solutions of each inequality on a number line.
$$-1
3 step solution
Problem 11
Let \(x\) represent the number. Write each English phrase as an algebraic expression. 30 subtracted from 7 times a number
3 step solution
Problem 11
In Exercises \(1-16,\) solve and check each linear equation. $$ 3(x-4)-4(x-3)=x+3-(x-2) $$
4 step solution
Problem 12
In Exercises \(9-20,\) find each product and write the result in standard form. $$(-4-8 i)(3+9 i)$$
4 step solution
Problem 12
Solve each quadratic inequality in Exercises \(1-28\) and graph the solution set on a real number line. Express each solution set in interval notation. $$ x^{2}-2 x-3 \geq 0 $$
4 step solution
Problem 12
Plot the given point in a rectangular coordinate system. $$\left(-\frac{5}{2}, \frac{3}{2}\right)$$
3 step solution
Problem 12
Solve each radical equation in Check all proposed solutions. $$ \sqrt{20-8 x}=x $$
5 step solution
Problem 12
Solve each equation in Exercises \(1-14\) by factoring. $$16 x(x-2)=8 x-25$$
4 step solution
Problem 12
In Exercises 1-12, graph the solutions of each inequality on a number line. $$-7 \leq x \leq 0$$
3 step solution
Problem 12
Let \(x\) represent the number. Write each English phrase as an algebraic expression. The quotient of 12 and a number, decreased by 3 times the number
2 step solution
Problem 12
In Exercises \(1-16,\) solve and check each linear equation. $$ 2-(7 x+5)=13-3 x $$
5 step solution
Problem 13
In Exercises \(9-20,\) find each product and write the result in standard form. $$(7-5 i)(-2-3 i)$$
3 step solution
Problem 13
Solve each quadratic inequality in Exercises \(1-28\) and graph the solution set on a real number line. Express each solution set in interval notation. $$ 3 x^{2}+10 x-8 \leq 0 $$
5 step solution
Problem 13
Graph each equation in Exercises \(13-28 .\) Let \(x=-3,-2,-1\) \(0,1,2,\) and 3. $$y=x^{2}-2$$
3 step solution
Problem 13
Solve each radical equation in Check all proposed solutions. $$ \sqrt{x+3}=x-3 $$
3 step solution