$3x-5\le5x+1$

$\int_{\frac{\pi}{-4}}^{\frac{\pi}{6}}\left(-\sec\left(x\right)\tan\left(x\right)\right)dx$

$5-4+8-4+10-4+20-4$

$\left(2\right)^3-3\left(2\right)^2+4\left(2\right)-2$

$\frac{\left(-1\right)^nx^n}{\left(3^n\right)\left(n^2+7\right)}$

$\left(2x+1\right)^2\left(2x-1\right)^2-2$

$b^2+b=4$