Valendo 25 Pontos. Resposta com as contas! Valeu :D


Calcule:
a) -2x²y + 3x²y -5x²y

b) (-3/4 x³y) - (1/3 x³y) - (-3/2 x³y)

c) (4xy²) .(-9a³x²y)

d) (-4xy²) . (-0,2yz)

e) (12a^4b³) : (-2ab²)

f) (-2/3 x^4y³) : (4/5xy²)

g) (-2a³x)²

h) (-2/3 m²x)3
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