$\frac{\left(5sin^2\left(x\right)\right)}{x^2}$

$-8-3+5-4+4+1+2$

$\left(3a^{x-4}-b^{3x}\right)\left(3a^{x-4}+b^{3x}\right)$

$\frac{4x^2-9^1}{2x-3}$

$\left(3+y\right)^7$

$\left(\frac{x^{-2}y^3}{x^4y^{-1}}\right)^4\left(\frac{x^{-2}y^3}{x^4y^{-1}}\right)$

$\frac{dy}{dx}=3y+x^2\cdot e^{3x}$