Chapter 6
Elementary Algebra · 475 exercises
Problem 1
Factor completely. $$ 2 x 5 y 2-12 x 4 y 3 $$
3 step solution
Problem 1
Determine the missing factor. $$ 12 x 3-24 x 2+4 x=4 x(\quad ? \quad) $$
4 step solution
Problem 1
One integer is five times another. If the product of the two integers is \(80,\) then find the integers.
7 step solution
Problem 1
Determine whether the given set of values are solutions to the quadratic equation. $$ \\{-3,5\\} ; x_{2}-2 x-15=0 $$
4 step solution
Problem 1
Factor. $$ 3 x 2-14 x-5 $$
9 step solution
Problem 1
Give the prime factorization of each number and determine the GCF. $$ \text { 18, } 24 $$
4 step solution
Problem 1
Are the following factored correctly? Check by multiplying. $$ x 2+5 x-6=(x+2)(x+3) $$
5 step solution
Problem 1
Factor completely. $$ x_{2}-9 $$
4 step solution
Problem 2
Factor completely. $$ 18 x 5 y 3-6 x 4 y 5 $$
3 step solution
Problem 2
Determine the missing factor. $$ 10 y 4-35 y 3-5 y 2=5 y 2(\quad ? \quad) $$
4 step solution
Problem 2
One integer is four times another. If the product of the two integers is \(36,\) then find the integers.
6 step solution
Problem 2
Factor. $$ 5 x 2+7 x+2 $$
6 step solution
Problem 2
Give the prime factorization of each number and determine the GCF. $$ 45,75 $$
4 step solution
Problem 2
Are the following factored correctly? Check by multiplying.] $$ x 2+6 x+16=(x+8)(x-2) $$
4 step solution
Problem 3
Factor completely. $$ 5 x 2+20 x-25 $$
5 step solution
Problem 3
Determine the missing factor. $$ -18 a 5+9 a 4-27 a 3=-9 a 3(\quad ? \quad) $$
5 step solution
Problem 3
An integer is one more than four times another. If the product of the two integers is 39 , then find the integers.
8 step solution
Problem 3
Give the prime factorization of each number and determine the GCF. $$ 72,60 $$
4 step solution
Problem 3
Are the following factored correctly? Check by multiplying. $$ y 2+2 y-8=(y+4)(y-2) $$
4 step solution
Problem 4
An integer is 3 more than another. If the product of the two integers is \(130,\) then find the integers.
7 step solution
Problem 4
Factor completely. $$ 4 x 2+10 x-6 $$
6 step solution
Problem 4
Determine the missing factor. $$ -21 x 2 y+7 x y 2-49 x y=-7 x y(\quad ? \quad) $$
5 step solution
Problem 4
Determine whether the given set of values are solutions to the quadratic equation. $$ \\{-3 / 4,3 / 4\\} ; x_{2}-916=0 $$
5 step solution
Problem 4
Give the prime factorization of each number and determine the GCF. $$ 168,175 $$
4 step solution
Problem 4
Are the following factored correctly? Check by multiplying. $$ y 2-10 y+21=(y-3)(y-7) $$
4 step solution
Problem 5
An integer is 2 less than twice another. If the product of the two integers is \(220,\) then find the integers.
8 step solution
Problem 5
Factor completely. $$ 24 x 3-30 x 2-9 x $$
7 step solution
Problem 5
Factor out the GCF. $$ 22 x 2+11 x $$
4 step solution
Problem 5
Determine whether the given set of values are solutions to the quadratic equation. $$ \\{-3,2\\} ; x 2-x-6=0 $$
4 step solution
Problem 5
Factor. $$ 2 x 2+9 x-5 $$
7 step solution
Problem 5
Give the prime factorization of each number and determine the GCF. $$ 144,245 $$
3 step solution
Problem 6
An integer is 3 more than twice another. If the product of the two integers is \(90,\) then find the integers.
8 step solution
Problem 6
Factor completely. $$ x 2-18 x+72 $$
4 step solution
Problem 6
Factor out the GCF. $$ 15 y 4-5 y 3 $$
3 step solution
Problem 6
Determine whether the given set of values are solutions to the quadratic equation. $$ \\{-5,1\\} ; x 2-4 x-5=0 $$
3 step solution
Problem 6
Factor. $$ 7 x 2+20 x-3 $$
7 step solution
Problem 6
Give the prime factorization of each number and determine the GCF. $$ 15,50,60 $$
4 step solution
Problem 7
One integer is 2 units more than another. If the product of the two integers is equal to five times the larger, then find the two integers.
6 step solution
Problem 7
Factor completely. $$ 6 x 3+27 x 2-9 x $$
7 step solution
Problem 7
Solve. $$ (x-3)(x+2)=0 $$
4 step solution
Problem 7
Give the prime factorization of each number and determine the GCF. $$ 14,63,70 $$
4 step solution
Problem 8
A positive integer is 1 less than twice another. If the product of the two integers is equal to fifteen times the smaller, then find the two integers.
6 step solution
Problem 8
Factor out the GCF. $$ 12 a 5+20 a 3-4 a $$
6 step solution
Problem 8
Solve. $$ (x+5)(x+1)=0 $$
3 step solution
Problem 8
Factor. $$ 3 x 2+x-2 $$
5 step solution
Problem 8
Give the prime factorization of each number and determine the GCF. $$ 12,48,125 $$
4 step solution
Problem 8
Are the following factored correctly? Check by multiplying. $$ x 2+5 x+14=(x-2)(x+7) $$
3 step solution
Problem 9
A positive integer is 3 more than twice a smaller positive integer. If the product of the two integers is equal to six times the larger, then find the integers.
6 step solution
Problem 9
Factor completely. $$ 5 x 3-30 x 2-15 x+90 $$
5 step solution
Problem 9
Factor out the GCF. $$ 9 x 3 y 2-18 x 2 y 2+27 x y 2 $$
3 step solution