Question

a) (x⁴ - 3x² - 5x + 1) . ( - 4x ) b) (8x - 2) . (3x + 1 )

Answer 1

$a)\\\\(x^{4} -3x^{2} -5x).(-4x)\\ \\ propriedade~distributiva\\ \\ -4x^{5} +12x^{3} +20x^{2} \\ \\ b)\\ \\ (8x-2).(3x+1)\\ \\ propriedade~distributiva\\ \\ 24x^{2} +8x-6x+2=\\ \\ 24x^{2} +2x+2$