$\frac{x}{-11}=\:-3$

$\sqrt{\left(\cos\left(x\right)\right)^2+\left(\sin\left(x\right)\right)^2+\left(\cot\left(x\right)\right)^2=-\csc\left(x\right)}$

$\int5arcsen\left(9x\right)dx$

$23,5\cdot7,54$

$\int\:\frac{1}{\sqrt{5}\left(v^2+1\right)}dv$

$\left(\frac{1}{5}x^2+5y^3z^4\right)^3$

$2\left(4\right)+7\left(5\right)-2\left(8\right)$