Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 152627: solve for x:
5x^3 - 30x^2 + 45x = 0: solve for x:
5x^3 - 30x^2 + 45x = 0
Answer by Fombitz(1741) About Me  (Show Source):
You can put this solution on YOUR website!
5x^3-30x^2+45x=5x(x^2-6x+9)
5x^3-30x^2+45x=5x(x-3)^2
5x^3-30x^2+45x=5x(x-3)^2=0
First zero:
5x=0
x=0
Second and third zero:
(x-3)=0
x=3
graph( 300, 300, -10, 10, -20, 20, 5x^3-30x^2+45x)