$\lim_{x\to1}\left(\frac{\left(x^3-9x^2+8\right)}{x-1}\right)$

$\lim_{x\to2}\left(\frac{\left(x^2-5x+6\right)\sin\left(x-2\right)}{\left(x^2-x-2\right)^2}\right)$

$-2y^3+3y+7y^3+1+2-5$

$\left(m^6n^4+3\right)^3$

$3x^2+12x+5=0$

$\left(x+y\right)\left(m+n\right)\left(p+q\right)$

$\int\frac{u^4+1}{u\left(u^2-1\right)^2}du$