$2\cos\left(2x\right)=\cos\left(2x\right)\csc\left(x^2\right)$

$\lim_{x\to\infty}\left(\frac{7x^2-5x+12}{5+3x^5}\right)$

$\frac{\left(x^2-3x+2\right)}{\left(x^3-x^2-5x+3\right)};\:x=1$

$x^2\le5x-6$

$\int\left(\frac{1}{8^{\frac{1}{2}}}\right)dx$

$5x^{\frac{1}{2}}-\frac{5x-2}{2\sqrt{x}}$

$\left(n+m\right)^4$