$\ln\left(x^{12}\sqrt{2-x}\right)$

$\left(-51.66\right)^2-4\left(16.81\right)\left(39.69\right)$

$x-10+100$

$\left(14+xy\right)\left(14-xy\right)$

$\int\left(\frac{\left(2\sin\:\left(x\right)\right)}{\cos^3\left(x\right)}\right)dx$

$f\left(x\right)=2x^2-6-14$

$y^2+4x=7$