Question

I need to find the value of x.
9x^3 + 9x = 30x^2
It's confusing because apparently I have to do 9x^3 + 9x and then add the + 30x^2 to it, and then make it equal 0, so it ends up like this:

9x^3 + 9x + 30x^2 = 0
And afterward, I would factor it. How do you factor it?
I'm having trouble factoring in general. =/

Answer 1

9x^3 + 9x + 30x^2 =

x [9 x^2 + 30 x + 9]

Then x = 0 or 9 x^2 + 30 x + 9 = 0

Divide by 3:

3 x^2 + 10 x + 3 = 0

(3 x + 1)(x + 3) = 0

x = -3 or x = -1/3

Answer 2

9x^3 + 9x = 30x^2

AFTER SUBTRACTING 30X^2 FROM EACH SIDE SHOULD BE LIKE SO;

9x^3 + 9x -30^2 = 0

IS THIS THE PROBLEM?

Answer 3

x^2+3x-18=0