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)#