$11sin\theta\:+2=4sin\theta\:+2$

$-\frac{x^7y^6}{-8x^9y^{10}}$

$a\:=\:-\:4\:;\:b\:=\:5;\:c\:=\:10-8\:a\:+\:9\:b\:+\:5\:c\:$

$2ab-30$

$\left[\left(23-4-12\right)\left(-12\right)-\left(34-3-\left(-23\right)\right)\right]$

$36x^2-18x-9$

$\left(arctan\left(\frac{y}{x}\right)=\ln\left(x\right)+\ln\left(c\right)\right)$