$5y^4\cdot4yx^3$

$\left(4a^{6x}+2\right)\left(4a^{6x}+8\right)$

$3x^2+8x+4$

$x2\:-\:17x\:-\:60\:>\:0$

$\lim_{x\to0}\left(\frac{x-x^2}{e^{2x}-z}\right)$

$\lim_{x\to\infty}\frac{2x^2+3x+1}{x^4\:-x^2}$

$\sec\left(x\right)^2+\csc\left(x\right)^2=\frac{1}{\sin\left(0.8\right)^2\cdot\cos\left(x\right)^2}$