How do you factor the trinomial 49x^2-21x+249x2−21x+2?

1 Answer
Steven G.
Jun 3, 2016

(7x-1)(7x-2)(7x−1)(7x−2)

Explanation:

You have a square number, 49 as your x^2x2 coefficient. Therefore your factors within your parentheses are both going to start with 7x7x Your centre term has a negative coefficient and your last term is a positive. This indicates that the signs inside will both be negative. Lastly, negative 1 multiplied by negative 2 gives you +2+2

If you expand it as a check, you should get back to your original trinomial.

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