How do you use the difference of two squares formula to factor #2(y-4)^2 - 50#?
1 Answer
Aug 7, 2018
Explanation:
#"take out a "color(blue)"common factor "2#
#=2[(y-4)^2-25]#
#a^2-b^2=(a-b)(a+b)larrcolor(blue)"difference of 2 squares"#
#"with "a=y-4" and "b=5#
#=2((y-4-5))((y-4)+5))#
#=2(y-9)(y+1)#
