Question

4x²+10x-5+(-13x²+9x+7)​

Answer 1

Respuesta:

$= - 9 {x}^{2} + 19x + 2$

Explicación paso a paso:

$= - 4{x}^{2} + 10x - 5 - 13 {x}^{2} + 9x + 7 \\ = - 4 {x}^{2} - 13 {x}^{2} + 10x + 9x - 5 + 7 \\ = - 9 {x}^{2} + 10x + 9x - 5 + 7 \\ = - 9 {x}^{2} + 19x - 5 + 7 \\ = - 9 {x}^{2} + 19x + 2$