$x^2+2x=264$
$0.5-1.5-1$
$\left(\frac{1}{2}\right)^{1-2}$
$3\left(4a+2b\right)$
$\cos\left(74\right)+\frac{4}{\sin\left(53\right)}$
$\frac{x^2+15}{\left(x+3\right)^2}$
$z=-2x+2y+6$
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