$25n^2-16m^2$

$\int_{x^2}^x\left(e^{\frac{2y}{x}}\right)dy$

$\int_0^{\infty}\frac{\log_{10}\left(x\right)}{\sqrt{x}\left(x+1\right)^2}dx$

$x-7=2x+2$

$\int\left(\frac{\left(x+1\right)^2}{x}\right)dx$

$\int2x^{-3}dx$

$\frac{b^2+b-5}{b+3}$