algebra

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(3-2square of 7(3+2square of 7
can someone help me please. This must turn in tonight

  • algebra -

    (3-2sqrt7)(3+2sqrt7)
    is of the form
    (a-b)(a+b)
    which equals a^2 - b^2.
    That means the answer is 9 - 28 = -19

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