$-d-7d-8d+3d+8d$

$\lim_{x\to0}\left(\frac{e^x\cos\left(x\right)}{4\sin\left(x\right)}\right)$

$\left(3^6\right)\left(4\right)y^{17}x^2$

$3y'\:+xy\:=\:x$

$12\tan\left(x\right)=0$

$\sin\:\left(\left(-38\right)^{\circ\:\:}\right)\sec\:\left(52^{\circ\:\:}\right)$

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