$\frac{70}{5\sin\left(x\right)^2+2\cos\left(x\right)^2}$

$\left(\frac{2^2\cdot3^5\cdot4^2}{2^4\cdot3^2}\right)$

$\lim_{x\to r}\left(\frac{x^2-ax}{x^2-4}\right)$

$x2-x=3\left(x-5\right)$

$\left(\frac{-2}{7}x^4+\frac{9}{5}y^8\right)\left(\frac{2}{7}x^4+\frac{9}{5}y^8\right)$

$\int\left(4x+2\right)^3dx$

$3.7321+4.7321$