$\frac{d^2i}{dt^2}+10\frac{di}{dt}+10i=0$

$tan\left(-x\right)csc\left(x\right)cos\left(x\right)$

$x\cdot\:y^'+y=cos\left(x\right)$

$\left(5xz+3\right)^3$

$9+12b$

$\cos^3\left(x\right)=\left(1-\sin^2\left(x\right)\right)\left(\cos\left(x\right)\right)$

$\int\frac{5x+7}{x^2+x-2}dx$