How do you factor #y= 4x^2 + 24x + 36#?
1 Answer
Apr 28, 2018
Explanation:
#"take out a "color(blue)"common factor "4#
#=4(x^2+6x+9)#
#x^2+6x+9" is a "color(blue)"perfect square"#
#"note that "(a+b)^2=a^2+2ab+b^2#
#"with "a=x" and "b=3#
#rArrx^2+6x+9=(x+3)^2#
#rArr4x^2+24x+36=4(x+3)^2#
