SOLUTION: How do you factor 3x^3-30x-15x^2? Could you please show and explain each step? Thank you so much.

Question 50552: How do you factor 3x^3-30x-15x^2? Could you please show and explain
each step? Thank you so much.
Answer by Nate(3500) (Show Source): You can put this solution on YOUR website!
3x^3 - 15x^2 - 30x
x(3x^2 - 15x - 30)

Solved by pluggable solver: SOLVE quadratic equation with variable

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=585 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 6.53112887414927, -1.53112887414927. Here's your graph:

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