Question

efetue as somas dos mônomios semelhantes
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Answer 1

Resposta:

Explicação passo a passo:

$1)9xy-4x+7x-8xy=xy+3x\\\\2)17x-20y+14x-20x=11x-20y\\\\3)2x^2-3x^2+4x^2-2x=3x^2-2x\\\\4)\17x^2y-20xy^2+40xy^2-15x^2y=2x^2y+20xy^2\\\\5)4x-2y+8x+10y=4x-2y+8x+10y\\\\6)12x^3+8x^3-2x^2=20x^3-2x^2$