Question

(x4y4+x4y6-x5y5):(x4y4)

Answer 1

Dividindo cada termo do dividendo pelo divisor

            $= \frac{x^4y^4}{x^4y^4} + \frac{x^4y^6}{x^4y^4} -\frac{x^5y^5}{x^4y^4} \\ \\ = x^{4-4} y^{4-4} + x^{4-4} y^{6-4} - x^{5-4} y^{5-4} \\ \\ =1+y^2-xy$