Question

270x-3x^2-3x^3=0
solve by factoring

Answer 1

First you got to factor the left side of the equation.
3x(-x+9)(x+10)=0
second you have to set factors equal to 0
3x=0 or -x+9=0 or x+10

So your answer can be:
X=0 or x=9 or x=-10