$\left(x+1\right)^2+\left(x+2\right)^2-2\left(x+5\right)\left(x+1\right)+6\left(x+1\right)$

$\int_0^1\left(x^2sec^2\left(x^3\right)\right)dx$

$\lim_{x\to0}\left(x^2e^{4x}\right)$

$z^{2n-1}\cdot z^6$

$\left(\sqrt[2]{7y}\right)^3$

$\left(4x+5\right)\left(16x-20x+25\right)$

$\int y^2\:sin\left(8y\right)\:dx$