Question

How would solve this 5x^2 = –45x

Answer 1

5x^2 = –45x
5x^2 +45x = 0
Take out common factors
5x(x+9) =0
So 5x =0 or x+9 = 0
x =0 or x=-9
Do you understand that?

Answer 2

hold on how did you get four answers

Answer 3

nah.. i've got 2 only :S

Answer 4

5x =0 or x+9 = 0 <- solve it and you get the next step
x =0 or x=-9

Answer 5

ohhhhhhh ok, i get it, thanks