$\int x\left(\sqrt[14]{x}+\sqrt[15]{x}\right)dx$

$+10+12+13+14+1+100$

$\left(7m+n\right)\left(7m\:-\:3n\right)$

$-12x\:+\:13=-59$

$\frac{\left(\left(\sqrt[3]{\left(x+h\right)^2}\right)-\sqrt[3]{x^2}\right)}{h}$

$\left(5+x\right)\frac{du}{dx}+u=5+x$

$\left(m-8\right)\left(m-7\right)$