Question

Qual é o valor de (-9ײy) . (-5×y²) ?

Answer 1

Resposta:

${45x}^{3} - {9x}^{2} {y}^{2} - 5y + {y}^{3}$

Answer 2

Resposta:

45x^3 y^3

$( - 9x {}^{2}y).( - 5xy {}^{2}) = \\ ( - 9x {}^{2}y) \times ( - 5xy {}^{2}) \\ 9x {}^{2}y \times 5xy {}^{2} \\ ( -9x {}^{2}y) \times ( - 5xy {}^{2}) \\ 9 - x {}^{2}y \times 5xy {}^{2} \\ 45x {}^{2}yxy {}^{2} \\ 9x {}^{2}y \times 5xy {}^{2} \\ 45x {}^{2}y {}^{1}y {}^{2} \\ 9x {}^{2}y \times 5xy {}^{2} \\ 45x {}^{2 } y {}^{1}x {}^{2} y {}^{2} \\ 45x {}^{2 + 1} \times y {}^{2} \\ 45x {}^{2}y {}^{1}x {}^{1} y {}^{2} \\45x {}^{2 + 1}y {}^{1 + 2} \\ 45x {}^{3}y {}^{1 + 2} \\ 45x {}^{2 + 1}y {}^{1 + 2} \\ 45x {}^{3}y {}^{3} \\ ( - 9x {}^{2}y) \times ( - 5xy {}^{2}) \\ 45x {}^{3}y {}^{3} \\ resposta \\ 45x {}^{3}y {}^{3}$