3(2x - 1)(x + 2) – (3x - 1)(2x + 1)(x + 3) + 6x(x² + 2x - 1)
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o" * " significa:Vezes
(6x-3)*(x+2)-(6x²+3x-2x-1)*(x+3)+6x³+12x²-6x
6x²+12x-3x-6-(6x³+x-1)*(x+3)+6x³+12x²-6x
6x²+12x-3x-6-(6x³+19x²+2x-3)+6x³+12x²-6x
6x²+12x-3x-6-6x³-19x²-2x+3+6x³+6x³+12x²-6x
-x²+x-3
Resposta final: -x²+x-3
(6x-3)*(x+2)-(6x²+3x-2x-1)*(x+3)+6x³+12x²-6x
6x²+12x-3x-6-(6x³+x-1)*(x+3)+6x³+12x²-6x
6x²+12x-3x-6-(6x³+19x²+2x-3)+6x³+12x²-6x
6x²+12x-3x-6-6x³-19x²-2x+3+6x³+6x³+12x²-6x
-x²+x-3
Resposta final: -x²+x-3
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