Question

Calcule: A)x²y–5yx+16y²-20x²y+7yx-6y²+13x²y= B) (x² + 2xy) (x + y) (obs: gente me ajuda por favor)

Answer 1

Resposta:

A) -6x²y+2yx+10y²

B) x³+3x²y+2xy²

Explicação passo-a-passo:

A) x²y–5yx+16y²-20x²y+7yx-6y²+13x²y = x²y-20x²y+13x²y-5yx+7yx+16y²-6y² = -6x²y+2yx+10y²

B) (x²+2xy)(x+y) = x³+x²y+2x²y+2xy² = x³+3x²y+2xy²