Question

meu problema de matemática pra amanhã

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Answer 1

Resposta:

a) (3x³+5x²+x-3) + (x³-3x²+2x+4)

3x³+5x²+x-3+x³-3x²+2x+4

4x³+2x²+3x+1

b) (4x³-4x²+2x+1) – (2x³-3x²+x+2)

4x³-4x²+2x+1-2x³+3x²-x-2

2x³-x²+x-1

c) (-x²+2xy+y²+2) – (x²-2xy+y²-2)

-x²+2xy+y²+2-x²+2xy-y²+2

-2x²+4xy+4

d) (-x²-2xy-y²-1) – (-x²-2xy+y²-1)

-x²-2xy-y²-1+x²+2xy-y²+1

-2y²