$\left(x-0.2\right)^2$

$\frac{10}{17.3\:tan}$

$x^3-x^2+4x^3-x^2+x^2y+2-3x^2y\:$

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

$\int\frac{7x-9}{\left(x^2+4\right)\left(x-1\right)}dx$

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

$\sin\left(\frac{2\pi}{644}x\right)=0$