$\int_{-1}^1\left(x^{\left(-\frac{2}{3}\right)}\right)dx$

$\lim_{x\to0}\left(\frac{\sin\left(2x\right)}{\ln\left(x+1\right)\cos\left(x\right)}\right)$

$\frac{dy}{dx}=y^2-10xy+25x^2-4$

$\int3xln\left(6x\right)dx$

$\lim_{x\to\infty}\left(\sqrt{x^2+4x+11}-x\right)$

$-8x\:+\:10y\:=\:-18$

$x2-2x-4=20$