Question

Simplify?

Answer 1

Factor some of that negative 3 business out of everything,
\(\large\rm -3x^3+9x^2+30x\quad=\quad -3(x^3-3x^2-10x)\)
oh and an x out of everything also,
\(\large\rm -3x^3+9x^2+30x\quad=\quad -3x(x^2-3x-10)\)

Understand what I did there?
Try to do it with the denominator as well.

\(\large\rm -3x^3-18x^2-24x\quad=\quad -3x(\qquad \qquad? \qquad\qquad)\)

Answer 2

I'm still kinda confused..

Answer 3

-3x=0,x=0 \[x ^{2}-3x-10=0\] \[x ^{2}-5x+2x-10=0\] \[x(x-5)+2(x-5)=0\]\[(x-5)(x+2)=0\]\[x-5=0,x+2=0\]\[x=5,x=-2\]
i hope do you understand x=0,x=5,x=-2