Question

Dados los polinomios, calcular A-B

Answer 1

$A = - 2 {x}^{3} - 6x + 3 \\ B = 3 {x}^{4} - 5 {x}^{2} + 2 {x}^{2} - 7x + 5 \\ A - B = - 2 {x}^{3} - 6x + 3 - (3 {x}^{4} - 5 {x}^{2} + 2 {x}^{2} - 7x + 5) \\ A - B =-2 {x}^{3} - 6x + 3 - 3 {x}^{4} + 5 {x }^{2} - 2 {x}^{2} + 7x - 5 \\A - B = - 3 {x}^{4} - 2 {x}^{3} + 5 {x}^{2} - 2 {x}^{2} + 7x - 6x + 3 - 5 \\ A - B = - 3 {x}^{4} - 2 {x}^{3} + 3 {x}^{2} + x - 2$