$x^2-30x-675$

$\int\left(\frac{-2x}{5-x^2}\right)dx$

$\int_{\frac{\pi}{2}}^{\pi}\left(\frac{x\sin^2\left(x\right)}{2}\right)dx$

$x^2+x-132=0$

$\left(x+5y^3\right)^2\left(x+5y^3\right)$

$\frac { 14 x ^ { 3 } y ^ { 4 } } { 2 x y ^ { 2 } }$

$4\left(x+2\right)-3\left(x-5\right)v^2$