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how do i factor the perfect square trinomial 9x2-12x+4

  • alg3 -

    (3 2 ) (3 2) have to appear if it is a perfect square to get that 9 and 4

    it has to be - 2 times -2 to get +4 and -12

    so try
    (3x-2)(3x-2)
    sure enough

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