$\lim_{x\to\frac{x}{2}}\left(\frac{-24sin\left(3x\right)}{sec\left(5x\right)tan\left(5x\right)\left(5\right)}\right)$

$\left(4.58\right)\left(6.92\right)$

$x^4-6x^2$

$24x^2+12xy$

$\left(\frac{2}{5}b^2-\frac{3}{4}\right)\left(\frac{2}{5}b^2+\frac{3}{4}\right)$

$4\log_{10}\left(800\right)$

$\frac{d}{dx}\left(\frac{1+\sin\left(x\right)}{x\cdot\cos\left(x\right)}\right)$