$\sqrt{4-\left(2\sin\left(x\right)\right)^2}$
$\left(-2+5\right)^2+1$
$5\sin\left(x\right)+1=3\sin\left(x\right)$
$\left(\frac{\left(2x\right)}{3y}+\frac{\left(3y\right)}{2x}\right)\left(\frac{\left(2x\right)}{3y}+\frac{\left(3y\right)}{2x}\right)$
$\log\left(40\right)+\log\left(25\right)$
$\cos\left(30\right)\cdot\cos\left(20\right)+\sin\left(30\right)\cdot\sin\left(20\right)$
$x+23=12$
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