Resposta:
a)2x²-x b)y²-4y+2
c)-xy-y²+1 d)4x³-3y3
a) 2x²-5x+3-3x-3+7x 2x²-5x-3x+7x+3-3
2x²-8x+7x+ =2x²-x
b)3y²+2y²+y-1-3y³-y²-5y+3 3y²-3y3+2y2-y²+y-5y+3-1-y²-4y+2
c)-5xy+2y²+xy-3y²+2+3xy-1 5xy+xy+3xy+2y2-3y²+2-1 5xy+4xy-y²+1= -xy-y²+1
d)4x³-5y-6y3+7y+3y³- 2y 4x³-6y3+3y3-5y+7y-2y 4x³-3y3-7y+7y = 4x³-3y²
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Resposta:
a)2x²-x b)y²-4y+2
c)-xy-y²+1 d)4x³-3y3
a) 2x²-5x+3-3x-3+7x 2x²-5x-3x+7x+3-3
2x²-8x+7x+ =2x²-x
b)3y²+2y²+y-1-3y³-y²-5y+3 3y²-3y3+2y2-y²+y-5y+3-1-y²-4y+2
c)-5xy+2y²+xy-3y²+2+3xy-1 5xy+xy+3xy+2y2-3y²+2-1 5xy+4xy-y²+1= -xy-y²+1
d)4x³-5y-6y3+7y+3y³- 2y 4x³-6y3+3y3-5y+7y-2y 4x³-3y3-7y+7y = 4x³-3y²