$\left(\left(\frac{1}{3}\right)^{-\left(\frac{1}{3}\right)^{-2}}-\:\left(\frac{1}{64}\right)^{-3^{-1}}+\left(\frac{1}{4}\right)^{-\left(\frac{1}{4}\right)^{\frac{1}{2}}}\right)^{\frac{1}{2}}$

$32\cdot2$

$4a^2-8ab+4ab^2$

$[\left(a^{2}+3\right)-a][\left(a^{2}+3\right)+a]$

$\frac{40x^4-x^3+3\:}{4x^2-3}$

$\int\frac{5x+7}{\left(x-1\right)\left(x+4\right)}dx$

$\sin\left(2x+6\right)-\cos\left(4x-2\right)$