$\sec x\left(\sec x+1\right)$

$2x^2+3x-14$

$\left(4x^2y+5x^2+3xy-6x+2\right)+\left(-4x^2-8xy+10\right)$

$\frac{\left(2a^{-1}b^3\right)^4\left(2a^4b^{-4}\right)}{2b^{-2}}$

$5\left(a+b\right)+-2\left(a+b\right)-\left(a-b\right)$

$-3a+8=5a+24$

$\int_0^{\infty}\left(\frac{\cos\left(x\right)}{2x}\right)dx$