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

$7+4+5+8+1+2$

$\left(x^2\right)\:y'\:=\:2y^2$

$\lim_{x\to\infty}\frac{1-\left(4x^2+2x\right)}{x^2+4}$

$\left(3-5q\right)\left(3+5q\right)$

$a^4-5a^2+4$

$y=\frac{x^2\left(x^3+1\right)^4}{e^x\left(x+1\right)^5}$