1- (x² - 1) (x² + x + 1)
2- (x + y) (x + 2)
explicação por favor
1)x^4+x³+x²-x²-x-1=
x^4+x³-x-1
2)x²+2x+xy+2y
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Verified answer
1)x^4+x³+x²-x²-x-1=
x^4+x³-x-1
2)x²+2x+xy+2y