SOLUTION: please help me to factor the following trinomial 5t^3 -21t^2 +18t.

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Question 445092: please help me to factor the following trinomial 5t^3 -21t^2 +18t.
Answer by chriswen(106) About Me  (Show Source):
You can put this solution on YOUR website!
5t%5E3-21t%5E2%2B18t
=t%285t%5E2-21t%2B18%29
=t%285t%5E2-15t-6t%2B18%29 ...decomposition method (found two numbers that multiply to 90(5*18) and two numbers that add to -15).
=t%5B5t%28t-3%29-6%28t-3%29%5D
=t%285t-6%29%28t-3%29