$y2+16y+64$

$\frac{1+2\sin\left(x\right)}{\cos\left(x\right)^2-\sin\left(x\right)^2}$

$1+\left(-10\right)+4$

$\left(7a+3b\right)^2-\left(a-2b\right)^2$

$\frac{dm}{dt}=-km\left(t\right)$

$\int\frac{x-1}{e^x}dx$

$\lim_{x\to0}\left(\frac{1-\cos\left(2x\right)}{5x}\right)$