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Math Help - factoring trinomials

  1. #1
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    factoring trinomials

    Hi all;
    I need to factor the following 91 + 24q +-27q^2.

    First I rearranged to the standard formula giving +-27q^2 + 24q +91.

    Both signs will be + in the binomials ( + )( + ).

    The factors of 27 will be 9 and 3 the factors of 91 will be 13 and 7.

    Now because with a we are adding a negative number we will get.

    (9q + 14)(-3q + 7)

    I have expanded through and got back to the original expression I just need confirmation that this is the right way to solve it.

    Thanks.
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  2. #2
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    Quote Originally Posted by anthonye View Post
    Hi all;
    I need to factor the following 91 + 24q +-27q^2.

    First I rearranged to the standard formula giving +-27q^2 + 24q +91.

    Both signs will be + in the binomials ( + )( + ).

    The factors of 27 will be 9 and 3 the factors of 91 will be 13 and 7.

    Now because with a we are adding a negative number we will get.

    (9q + 14)(-3q + 7)

    I have expanded through and got back to the original expression I just need confirmation that this is the right way to solve it.

    Thanks.
    The red 14 should be a 13.
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  3. #3
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    Oops sorry I must of mis_typed it should have been (9q +13)(-3q +7).

    Thanks again.
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