$600+2x<2x+4x$

$\int\frac{x^{2}}{\sqrt{x^{2}-4}}dx$

$\log\left(x-4\right)-\log\left(x\right)=\log\left(x+2\right)$

$\int_4^1\left(2x-3x^2\right)dx$

$\left(2a^2\right)^2\left(bc^2\right)^3$

$\frac{2x^5-3x^3+x^2-2}{x^2+1}$

$sin\left(x\right)+\sin\left(x\right)\cot^2x=\csc\left(x\right)$