Question

VALENDO 80 pontos
2- Calcule o produto dos polinômios a seguir:

a) 2x(3x² - 2x + 5)

b) (3x²+2x)(2x³+5x)

c) (5x-2) (2x - 1)

Answer 1

A) 2x(3x^2 - 2x + 5)

$\boxed{6 {x}^{3} - 4 {x}^{2} + 10x}$

B) (3x^2 + 2x)(2x^3 + 5x)

$\boxed{6 {x}^{5} + 15 {x}^{3} + 4 {x}^{4} + {10x}^{2} }$

C) (5x-2) (2x-1)

${10x}^{2} - 5x - 4x + 2$

$\boxed{ {10x}^{2} - 9x + 2}$

Espero ter ajudado!

Answer 2

$a)2x.(3x {}^{2} - 2x + 5) = 6x {}^{3 } - 4x {}^{2} + 10x$

$b)(3x {}^{2} + 2x)(2x {}^{3} + 5x) = 6x {}^{5} + 15x {}^{3} + 4x {}^{4} + 10x {}^{2} =$

$6x {}^{5 } + 4x {}^{4} + 15x {}^{3} + 10x {}^{2}$

$c)(5x - 2)(2x - 1) = 10x {}^{2} - 5x - 4x + 2 = 10x {}^{2} - 9x + 2$