Chapter 3
Algebra for College Students · 608 exercises
Problem 15
Use the difference-of-squares pattern to factor each of the following. $$4 x^{2}-(y+1)^{2}$$
4 step solution
Problem 15
Factor each of the composite numbers into the product of prime numbers. For example, \(30=2 \cdot 3 \cdot 5 .\) $$56$$
5 step solution
Problem 15
Find each indicated product. Remember the shortcut for multiplying binomials and the other special patterns we discussed in this section. $$(y-5)(y+11)$$
6 step solution
Problem 15
Find each product. $$\left(\frac{2}{5} x y^{2}\right)\left(\frac{3}{4} x^{2} y^{4}\right)$$
4 step solution
Problem 15
Add the given polynomials. \(3 x^{2}-5 x-1\) and \(-4 x^{2}+7 x-1\)
6 step solution
Problem 16
Solve each equation. You will need to use the factoring techniques that we discussed throughout this chapter. $$25 x^{2}+30 x+8=0$$
8 step solution
Problem 16
Factor completely each of the polynomials and indicate any that are not factorable using integers. $$x^{2}-14 x y+40 y^{2}$$
4 step solution
Problem 16
Use the difference-of-squares pattern to factor each of the following. $$x^{2}-(y-5)^{2}$$
3 step solution
Problem 16
Factor each of the composite numbers into the product of prime numbers. For example, \(30=2 \cdot 3 \cdot 5 .\) $$64$$
5 step solution
Problem 16
Find each indicated product. Remember the shortcut for multiplying binomials and the other special patterns we discussed in this section. $$(y-3)(y+9)$$
4 step solution
Problem 16
Find each product. $$\left(\frac{1}{2} x^{2} y^{6}\right)\left(\frac{2}{3} x y\right)$$
4 step solution
Problem 16
Add the given polynomials. \(6 x^{2}+8 x+4\) and \(-7 x^{2}-7 x-10\)
3 step solution
Problem 17
Solve each equation. You will need to use the factoring techniques that we discussed throughout this chapter. $$3 t(t-4)=0$$
4 step solution
Problem 17
Factor completely each of the polynomials and indicate any that are not factorable using integers. $$a^{2}-a b-56 b^{2}$$
5 step solution
Problem 17
Use the difference-of-squares pattern to factor each of the following. $$9 a^{2}-(2 b+3)^{2}$$
4 step solution
Problem 17
Factor each of the composite numbers into the product of prime numbers. For example, \(30=2 \cdot 3 \cdot 5 .\) $$72$$
8 step solution
Problem 17
Find each indicated product. Remember the shortcut for multiplying binomials and the other special patterns we discussed in this section. $$(n+2)(n-7)$$
4 step solution
Problem 17
Find each product. $$\left(-\frac{3}{4} a b\right)\left(\frac{1}{5} a^{2} b^{3}\right)$$
3 step solution
Problem 17
Add the given polynomials. \(12 a^{2} b^{2}-9 a b\) and \(5 a^{2} b^{2}+4 a b\)
4 step solution
Problem 18
Solve each equation. You will need to use the factoring techniques that we discussed throughout this chapter. $$1-x^{2}=0$$
6 step solution
Problem 18
Factor completely each of the polynomials and indicate any that are not factorable using integers. $$a^{2}+2 a b-63 b^{2}$$
5 step solution
Problem 18
Use the difference-of-squares pattern to factor each of the following. $$16 s^{2}-(3 t+1)^{2}$$
4 step solution
Problem 18
Factor each of the composite numbers into the product of prime numbers. For example, \(30=2 \cdot 3 \cdot 5 .\) $$84$$
5 step solution
Problem 18
Find each indicated product. Remember the shortcut for multiplying binomials and the other special patterns we discussed in this section. $$(n+3)(n-12)$$
4 step solution
Problem 18
Find each product. $$\left(-\frac{2}{7} a^{2}\right)\left(\frac{3}{5} a b^{3}\right)$$
4 step solution
Problem 18
Add the given polynomials. \(15 a^{2} b^{2}-a b\) and \(-20 a^{2} b^{2}-6 a b\)
4 step solution
Problem 19
Solve each equation. You will need to use the factoring techniques that we discussed throughout this chapter. $$-6 n^{2}+13 n-2=0$$
7 step solution
Problem 19
Factor completely each of the polynomials and indicate any that are not factorable using integers. $$15 x^{2}+23 x+6$$
8 step solution
Problem 19
Use the difference-of-squares pattern to factor each of the following. $$(x+2)^{2}-(x+7)^{2}$$
4 step solution
Problem 19
Factor each of the composite numbers into the product of prime numbers. For example, \(30=2 \cdot 3 \cdot 5 .\) $$87$$
4 step solution
Problem 19
Find each indicated product. Remember the shortcut for multiplying binomials and the other special patterns we discussed in this section. $$(x+6)(x-6)$$
4 step solution
Problem 19
Find each product. $$\left(-\frac{1}{2} x y\right)\left(\frac{1}{3} x^{2} y^{3}\right)$$
4 step solution
Problem 19
Add the given polynomials. \(2 x-4,-7 x+2\), and \(-4 x+9\)
4 step solution
Problem 20
Solve each equation. You will need to use the factoring techniques that we discussed throughout this chapter. $$(x+1)^{2}-4=0$$
5 step solution
Problem 20
Factor completely each of the polynomials and indicate any that are not factorable using integers. $$9 x^{2}+30 x+16$$
6 step solution
Problem 20
Use the difference-of-squares pattern to factor each of the following. $$(x-1)^{2}-(x-8)^{2}$$
5 step solution
Problem 20
Factor each of the composite numbers into the product of prime numbers. For example, \(30=2 \cdot 3 \cdot 5 .\) $$91$$
4 step solution
Problem 20
Find each indicated product. Remember the shortcut for multiplying binomials and the other special patterns we discussed in this section. $$(t+8)(t-8)$$
4 step solution
Problem 20
Find each product. $$\left(\frac{3}{4} x^{4} y^{5}\right)\left(-x^{2} y\right)$$
4 step solution
Problem 20
Add the given polynomials. \(-x^{2}-x-4,2 x^{2}-7 x+9\), and \(-3 x^{2}+6 x-10\)
5 step solution
Problem 21
Solve each equation. You will need to use the factoring techniques that we discussed throughout this chapter. $$2 n^{3}=72 n$$
5 step solution
Problem 21
Factor completely each of the polynomials and indicate any that are not factorable using integers. $$12 x^{2}-x-6$$
6 step solution
Problem 21
Factor each of the following polynomials completely. Indicate any that are not factorable using integers. Don't forget to look first for a common monomial factor. $$9 x^{2}-36$$
5 step solution
Problem 21
Factor completely. $$6 x+3 y$$
3 step solution
Problem 21
Find each indicated product. Remember the shortcut for multiplying binomials and the other special patterns we discussed in this section. $$(x-6)^{2}$$
4 step solution
Problem 21
Find each product. $$(3 x)\left(-2 x^{2}\right)\left(-5 x^{3}\right)$$
3 step solution
Problem 21
Subtract the polynomials using the horizontal format. \(5 x-2\) from \(3 x+4\)
5 step solution
Problem 22
Solve each equation. You will need to use the factoring techniques that we discussed throughout this chapter. $$a(a-1)=2$$
6 step solution
Problem 22
Factor completely each of the polynomials and indicate any that are not factorable using integers. $$20 x^{2}-11 x-3$$
7 step solution
Problem 22
Factor each of the following polynomials completely. Indicate any that are not factorable using integers. Don't forget to look first for a common monomial factor. $$8 x^{2}-72$$
4 step solution