Question

dados los siguientes polinomios
-A(x)= -x³+2x-3
-B(x)=4x³-5x-2

Determinar A(x)+B(x)

Answer 1

-A(x)= -x³+2x-3
(-1)*(-A(x))=(-1)*(-x³+2x-3)
A(x)=x³-2x+3

-B(x)=4x³-5x-2
(-1)*(-B(x))=(-1)*(4x³-5x-2)
B(x)=-4x³+5x+2

A(x)+B(x)

(x³-2x+3)+(-4x³+5x+2)
=x³-2x+3-4x³+5x+2
=x³-4x³-2x+5x+3+2 (Ordenamos)
= -3x³+3x+5