Posted by **barbara** on Thursday, February 22, 2007 at 1:50am.

help my daughter has a math problem and came to me for help, I am lost....

what is the gcf for the following trinomial?

x^3-18x^2+28x

I am assumming you are trying to factorise

we can simply take out an x to give:

x(x^2-18x+28)

the quadratic will not factorise simply but if equated to zero would sove to give two real roots.

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