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If the question is x2 + x = 56 then the factorisation is (x - 8)(x + 7)
If the question is x2 - x = 56 then the factorisation is (x + 8)(x - 7)
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The prime factorization of 56 is:7 x 23 = 56
x2 + 4x - 32 = (x + 8)*(x - 4)
x2-7x+6 = (x-1)(x-6) when factored.
x2-x-56 = (x+7)(x-8) when factored
-x2 + 2x + 48 = (-x - 6)(x - 8)