how do you factor this  : 18x^3 + 6x^2 - 3x ,, show steps please

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first you need to take the GCF out:3x(6x^2+2x-1)now you have a quadratic so you use the quadratic formula to get the next answers. to set them as factors you make them = to x and put them all on that side. separate example:   x=2--->x-2=0--->(x-2) would be a factor