# How do you solve by factor #5x^2 + 20x + 20 = 0#?

##### 1 Answer

Mar 19, 2018

#### Answer:

#### 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"#