$\int\frac{x+4}{x^2+5x-7}dx$

$-3\cdot4+4$

$\frac{dy}{dx}\left(y=\left(e^{-2x}\right)\sqrt[3]{x^2-1}\sqrt{1+\sqrt{x}}\right)$

$\left(15+4t\right)\left(15+2t\right)$

$e^{5y}\left(5t^4\right)+xe^{5y}\left(5\right)\left(5\right)$

$10\cdot15$

$-\frac{1}{3}\left(15a-27b\right)$