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(i) x4-2x3-3x2 + 2x + 2 |
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Answer» x*x*x*x - 2x*x*x - 3x*x + 2x + 2 = x*x*x*x - x*x*x - x*x*x + x*x - 4x*x + 4x - 2x + 2 = x*x*x(x-1)-x*x(x-1)-4x(x-1)-2(x-1) = (x*x*x-x*x-4x-2)(x-1) |
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