$x^2-x+2<0$

$\left(2a-8\right)-\left(5a-7\right)$

$\lim_{x\to0}\left(\frac{1}{e^{\frac{1}{x}}\cdot x}\right)$

$\int x^2\sqrt{x+a}\:dx$

$\frac{\int\left(2x^2-8x-8\right)}{\left(x-2\right)\left(x^2+4\right)}dx$

$7x^2-2x^2+3x+4=5x^2+3x+4$

$deriv\:y=\left(x^5+2\right)^2\left(x^3+4\right)^4$