6-simplifique: $\frac{\left(x^{2}\right)^{2}+x^{2} \cdot x^{3}}{x^{3}}$

Step 1 ：First, we can simplify the numerator by applying the exponent rules and then combining the terms: \(x^{4} + x^{5} = x^{4}(x + 1)\)

Step 2 ：Now that we have simplified the numerator, we can simplify the entire expression by dividing the simplified numerator by the denominator \(x^{3}\): \(\frac{x^{4}(x + 1)}{x^{3}}\)

Step 3 ：Final Answer: \(\boxed{x(x+1)}\)