Question

dados os polinomios a=x²-3x+5 , B =X²+2X-4 E C =X² + 5X - 1 , calcule

a+b
a+c
b+6
Alguem pode mim ajudar ?

Answer 1

$A+B=x^{2}-3x+5+x^{2}+2x-4\\\\ A+B=x^{2}+x^{2}-3x+2x+5-4\\\\ A+B=2x^{2}-x+1$



$A+C=x^{2}-3x+5+x^{2}+5x-1\\\\ A+C=x^{2}+x^{2}-3x+5x+5-1\\\\ A+C=2x^{2}+2x+4$



$B+C=x^{2}+2x-4+x^{2}+5x-1\\\\ B+C=x^{2}+x^{2}+2x+5x-4-1\\\\ B+C=2x^{2}+7x-5$