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Anonymous
8+8+8+8=32
8*4=32 as well.
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9x + 2
(x + 5)(x + 8)
4x2 + 8x + 4 = 4 (x2 + 2x + 1) = 4 (x + 1)2
(x - 5)(x - 3)
Take out the common factor, 3: 3x + 6 = 3(x + 2).
4x2 + 12 = 4(x2 + 3)4x^2 + 8x + 3x + 6 = 4x(x + 2) + 3(x + 2)