Question

Sendo A=a^3-2a^2+5,B =2a^3 - 5a -7e C =a^3-2a^2 -a+6 determine
a) A+B b) A+C c) B+C d) A +B+C​

Answer 1

Resposta:

Explicação passo-a-passo:

A+B= a^3-2a^5+5 +2a^3-5a-7=3a^3-2a^2-5a-2

A+C=a^3-2a^2+5+a^3-2a^2-a+6=2a^3-4a^2+11

B+C=2a^3-5a-7+a^3-2a^2-a+6=3a^3-2a^2-6a-1

A+B+C=

a^3-2a^2+5+2a^3-5a-7+a^3-2a^2-a+6=

4a^3-4a^2-6a+4