$12\cdot3+-5$

$-9\sqrt[3]{8x^4}-\sqrt[3]{2x}+3\sqrt[3]{4x}-8\sqrt[3]{64x^4}$

$\int xe^tdx$

$\lim_{x\to-2}\left(\frac{y+2}{\sqrt{y+3}-1}\right)$

$-16x^2+44x-12=0$

$\frac{1+cos\left(x\right)+sen\left(x\right)}{1+cos\left(x\right)-sen\left(x\right)}=1$

$\left(5+3\right)\left(8-5\right)$