$2\sin^2u-\sin u-1=0$

$7x^4+2y\:x\:3x^5-y$

$8\csc\left(2x\right)\cot\left(2x\right)$

$\frac{5}{5-p}-\frac{p^2}{5-p}=-2$

$\left(-5+7-8\right)-\left(6+1-12\right)$

$\left(2x-\frac{y}{2}\right)\:\left(2x+\frac{y}{2}\right)$

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