Question

sendo a = x - 3 b = x + 1 e c = x - 2 calcule

Answer 1

Explicação passo-a-passo:

a) $\text{A}\cdot \text{B}=(x-3)\cdot(x+1)=x^2+x-3x-3=x^2-2x-3$

b) $\text{A}\cdot \text{C}=(x-3)\cdot(x-2)=x^2-2x-3x+6=x^2-5x+6$

c) $\text{B}\cdot\text{C}=(x+1)\cdot(x-2)=x^2-2x+x-2=x^2-x-2$