(x² - 2x + 3) (x - 5) - (x - 2) (2x - 5x + +4)
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(3x2+5x-7)(x-1)-(x2-2x+3)(x+4) =(3x³+5x²-7x-3x2-5x+7)-(x³-2x²+3x+4x²-8x
+12) =(3x +2x²-12x+7)-(x²+2x²-5x+12) =3x?+2x?-12x+7 -x³-2x²+5x-12
=2x3-7x-5
hope it helps you....
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