Question

Solve 5x^2 = –45x.

Answer 1

5x^2=-45x
5x^2+45x=0
5x(x+9)=0
So 5x=0 or x+9=0
x=0 or x=-9

Answer 2

We have the following equation:
\[5x^2=-45x\]If we divide both sides by x, we obtain:
\[5x=-45\]Then we divide by 5 and obtain:
\[x=-9\]

Answer 3

I forgot the possibility of division by zero. Anhhuyalex ist right.