Question

(×+3)² + (×+5)² - 2× (×+8)​

Answer 1

Respuesta:

34

Explicación paso a paso:

$\left(x+3\right)^2+\left(x+5\right)^2-2x\left(x+8\right)=x^2+6x+9+\left(x+5\right)^2-2x\left(x+8\right)=x^2+6x+9+x^2+10x+25-2x\left(x+8\right)=x^2+6x+9+x^2+10x+25-2x^2-16x=34$