Question

calcule as multiplicação dos polinômios​

Answer 1

Resposta:

$a) \: (x + 5) \times ( {x}^{2} + 2x - 10) \\ {x}^{3} + 2 {x}^{2} - 10x + 5 {x}^{2} + 10x - 50 \\ {x}^{3} + 7 {x}^{2} - 50$

$b) \: (x + 9) \times (x - 20) \\ {x}^{2} - 20x + 9x - 180 \\ {x}^{2} - 11 - 180$

$c) \: (x {}^{2} + 2) \times ( {x}^{2} + 6) \\ {x}^{4} + 6 {x}^{2} + 2 {x}^{2} + 12 \\ {x}^{4} + 8 {x}^{2} + 12$

$d) \: 2x \times (x + y) \\ 2 {x}^{2} + 2xy$