Question

Solve the equation 40 = 2x^2+ 2x by factoring.
What are the solutions?

Answer 1

X = -4 , x= 4

Explanation:

20=x^2-x=0

-20+x^2+x=0

x^2+x-20=0

x×(x+5)-4(x+5)=0

(x+5)×(x-4)=0

x+5=0

×-4=0

x=-5

x=4

Answer 2

x=4, -5

Explanation:

Factor and set each factor equal to zero