Question

9x^3+25x=30x^2 Solve
Solving Equations by Factoring

Answer 1

set all terms on one side or set the equation to 0.
9x^3+25x-30x^2 = 0

factor out an x.
x(9x^2-30x+25) = 0

one of the x values = 0
(x)=0 (9x^2-30x+25)=0

factor by unfoiling
(9x^2-30x+25)=0
(3x-5)(3x-5) = 0

add 5 to both sides
3x=5

solving for x will get you:
x = (5/3)

so the zeros of this equation are (this is the answer if they're asking you to find the zeros):
x = 0 and x = (5/3)