How do you solve by factor #5x^2 + 20x + 20 = 0#?
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1 Answer
Mar 19, 2018
Explanation:
#"take out a "color(blue)"common factor 5"#
#rArr5(x^2+4x+4)=0larrcolor(blue)"factor the quadratic"#
#"the factors of + 4 which sum to + 4 are + 2 and + 2"#
#rArr5(x+2)(x+2)=0#
#rArr5(x+2)^2=0#
#rArrx+2=0#
#rArrx=-2" is the solution"#
