## Intermediate Algebra for College Students (7th Edition)

$(a-b+2)(a+b-2)$
RECALL: A difference of two squares can be factored using the formula: $x^2-y^2=(x-y)(x+y)$ Factor the given difference of two squares using the formula above with $x=a$ and $y=b-2$ to obtain: $=[a-(b-2)][a+(b-2)] \\=(a-b+2)(a+b-2)$