$\lim_{x\to\pi}\left(\frac{2\cos\left(x\right)+2}{\left(x-\pi\right)^2}\right)$

$x^{3+4\log\:_{10}\left(x\right)}=10x^6$

$6+8+14+4$

$\frac{9.2}{1}\cdot1.5$

$-4-2\left(\left(-3-\left(4\right)\right)\right)$

$\left(5x+9\right)^2\left(5x-7\right)$

$3y-x-6y-i+12xy+4+xy$