Add the following expression 2+2x-2x²-3x³, 4x-6+3x²-x³and x+4+3x³+3x²
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= 2+2x-2x²-3x³+4x-6+3x²-x³+ x+4+3x³+3x²
= 3x³-x³-3x³-3x²+3x²-2x²+2x+4x+x+4+2-6
= -x³-2x²+7x
hope it will help you
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