$\lim_{x\to\left(0\right)}\left(\frac{e^{8x}}{sin\left(x\right)}\right)$

$15^2+6^2$

$2\left(x+4\right)=3\left(x-1\right)$

$9x^2-12x+14$

$\left(3^7\cdot4^7\right)\left(2\cdot5\right)^{-3}\left(5^2\right)$

$4x^2+\left(x-3\right)\cdot\left(x+3\right)>0$

$\left(a^5-3a^3+4a-6\right)\left(a-2\right)$