$-1\:+\:-2\:\:+\:3\:+4\:+-5\:+\:-6\:+7\:+-8\:+-9\:+10$

$\frac{1}{2}+\frac{1}{2}$

$\left(2x^3-3x^2+10x-6\right)\left(x^2\right)$

$\frac{dx}{dy}=\frac{\left(y+1\right)^2}{y}\left(\frac{1}{yln\left(x\right)}\right)$

$3\sqrt{252}$

$\frac{15}{2\sqrt{15x}}$

$z\left(z+9\right)\left(z-9\right)$