$\frac{365.22}{.2}$

$-5+\left|-3+\left(2-3\cdot4+5\right)-5\right|+1$

$\frac{yx}{\sqrt{1+y^2}\left(1-\sqrt{1+y^2}\right)}=\frac{dx}{dy}$

$x+7\:x+7$

$\sin a\cdot\sec a=\tan a$

$x^4-2x^3-13^2+14x+24$

$12\left(1-2\cdot\sin^2x\cdot\cos^2x\right)-8\left(1-3\cdot\sin^2x\cdot\cos^2x\right)$