$\left(\sqrt{a}-1\right)^2$

$-5+32-27-2+5-\left(-8\right)+10$

$1\cdotx^{2}+x$

$\left(x^3+2x^2+3x-1-\left(x^3+2x^2-4x-5\right)\right)\left(x-2\right)$

$\int\left(\frac{1}{13x-6}\right)dx$

$\lim_{x\to3}\left(\frac{x^4+x^3+27x-27}{x^3+2x^2-9x-18}\right)$

$\int_0^3\left(8x\right)dx$