$\frac{12x^2-5xy-2y^2}{3x-2y};\:x=3;\:y=2$

$\lim_{x\to\infty}\left(\frac{16e^{\sqrt{ln\left(x\right)}}}{\sqrt{x}}\right)$

$234+456+678+1234$

$-f-10f$

$x^4-6x^2+1-6x^2+6x^2$

$\frac{\left(-2\cdot2^2-2\right)}{\left(2^2-3\cdot2+2\right)}$

$\int\frac{5x^2-42x+35}{\left(6x+5\right)\left(x-3\right)^3}dx$