Question

Considera los polinomios A, B y C y Calcula
A+B y B-C.

A) 5x²+2x-9
B) 5x⁴-3x³+4x²+6x-7
C) 6x³+4x²-x+7.​

Answer 1

Explicación paso a paso:

A+B=

$(5 {x}^{2} + 2x - 9) + (5 {x}^{4} - 3 {x}^{3} + 4 {x}^{2} + 6x - 7)$

$5 {x}^{2} + 2x - 9 + 5 {x}^{4} - 3 {x}^{3} + 4 {x}^{2} + 6x - 7$

$5 {x}^{4} - 3 {x}^{3} + 9 {x}^{2} + 8x - 16$

B-C=

$(5 {x}^{4} - 3 {x}^{3} + 4 {x}^{2} + 6x - 7) - (6 {x}^{3} + 4 {x}^{2} - x + 7)$

$5 {x}^{4} - 3 {x}^{3} + 4 {x}^{2} + 6x - 7 - 6 {x}^{3} - 4 {x}^{2} + x - 7$

$5 {x}^{4} - 9 {x}^{3} + 7x$