$\sqrt[4]{x\sqrt{x\sqrt{x}^3}}$

$y^n+6y+5y-e^{2x}$

$\left(\tan^2x+1\right)\left(\cos^2\left(-x\right)-1\right)=-\tan^2x$

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

$x-10;\:x=5$

$\int\cos\left(\ln\left(4x\right)\right)dx$

$a^2-149+49$