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

$z^2+69z+980$

$\left(m+2\right)\left(m-12\right)$

$\lim_{x\to1}\left(\frac{\left(\ln\left(x\right)\right)^2}{x^2}\right)$

$\frac{-2x^5+8x^4+2x^2}{-2x^3}$

$y=\ln\left(7x-8\right)+\ln\left(x-2\right)$

$\frac{-1}{3}x\frac{3}{2}$