$7\left(-8+10x\right)+2\left(7+6x\right)$

$4a^{2}+12a+36$

$\left(-19x^6y^6-16x^4y^3\right)^2$

$\lim_{x\to0}\left(15xe^{\frac{1}{x}}\right)$

$2048+1000$

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

$39-\left(-39\right)$