$\int\frac{7x-5}{2x^2-5x-3}dx$

$\left[4a^2+4b^2\:\right]^2$

$\frac{1}{s}\cdot\frac{1}{s}$

$\frac{t}{e^{\frac{t^2}{2}}}+\frac{1}{e^{\frac{t^2}{2}}}=te^{-\frac{1}{2}t^2}$

$\frac{10x^3+11x^2-6x}{5x-2}$

$\left(\cos\left(x\right).\cot\left(x\right).\sin^2\left(x\right)+\sin^3\left(x\right)\right).\sin\left(x\right)+\cot^2\left(x\right).\sin^2\left(x\right)$