How do you factor completely 2x^2-8?
2 Answers
Mar 5, 2018
Explanation:
Mar 5, 2018
Explanation:
"take out a "color(blue)"common factor of 2"
rArr2(x^2-4)
x^2-4larrcolor(blue)"is a difference of squares"
•color(white)(x)a^2-b^2=(a-b)(a+b)
rArrx^2-4=(x-2)(x+2)
rArr2x^2-8=2(x-2)(x+2)