$\left(2m\right)x^{4m-3}+\left(5+m\right)x^{m+9}$

$\int_0^{\frac{1}{\sqrt{2}}}\left(\frac{x^3}{\sqrt{1-x^4}}\right)dx$

$\frac{y^2}{y^2+2}.\:y^3\:-\:\frac{2}{y^2-4}y^2\:-\:8y$

$\left(a-7^2\right)$

$x^2\:+\:12x\:-\:45\:=\:0$

$-220+250-200+330+170+140-160$

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