$x^2=2.x$

$\int\sqrt{x}\left(1-\sqrt{x}+\sqrt[3]{x^4}\right)dx$

$\tan\left(x\right)+\left(-1-\tan\left(x\right)^2\right)\tan\left(x\right)=-\tan\left(x\right)^3$

$x^2\sqrt{x^2}$

$\lim_{x\to\infty}\left(\frac{3x}{\sqrt{9x^2+1}}\right)$

$5x+3=-27$

$8x^6\:+\:16x^3\:+\:32x^7$