[tex]\text{Hello there!}\\\\\text{Assuming that you're trying to simplify, we need to combine like terms}\\\\\text{Solve:}\\\\(2x^5+7x^3)-(5x^2-4x^3)\\\\\text{Distribute the negative to the numbers inside the parenthesis}\\\\2x^5+7x^3-5x^2+4x^3\\\\\text{Combine like-terms}\\\\\boxed{2x^5+11x^3-5x^2}[/tex]
