$8\left(-10x+3.5y-7\right)$

$8\:\left(p\:+\:q\right)\:-\:r\:\left(p\:+\:q\right)$

$10jk^2+140jk+490j$

$\left(10\right)^3+\left(xy\right)^3-\left(xn\right)$

$2y^2dx-\left(x^2+y^2\right)dy=0$

$\lim_{x\to0}\left(\frac{\ln\tan\left(2x\right)}{\ln\sin\left(2x\right)}\right)$

$\frac{1-x^{12}}{1-4^4}$