Question

E(x)=$( x^{4} + 7x^{3} ): x^{2} - x^{2}$
Dau coroana!

Answer 1

[tex] (x^{4} +7 x^{3} ): x^{2} - x^{2}= \\ \frac{ x^{4} }{ x^{2} } + \frac{7 x^{3} }{ x^{2} } - x^{2} = x^{2} +7x- x^{2} =7x[/tex]