$y=a\arccos\left(1-\frac{x}{a}\right)\sqrt{2ax-x^2}$

$\left(u^{-3}\right)^{-6}$

$\left(-3\right)\cdot\left(+8+5\right)$

$\int_1^{\infty}\left(\frac{1}{\left(1+x^2\right)^2}\right)dx$

$s2+34s+494$

$sin^2xtan^2x+2sin^2x+cos^2x$

$\lim_{x\to5}\left(\frac{\cos\left(xt\right)-cos\left(5t\right)}{25-x^2}\right)$