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

$m^2-8m+15$

$\frac{x^3-x^2-17x-8}{x-5}$

$\left(-85\right)\left(73\right)\left(-48\right)$

$9\left(a+2d\right)^4-60\left(a+2d\right)^2+100$

$\int\frac{8\cos\left(x\right)\sin\left(x\right)}{\left(1+\cos^2\left(x\right)\right)^3}dx$

$\lim_{x\to\frac{1}{2}}\left(\frac{6x^2-5x-4}{4x^2+16x-9}\right)$