$-\infty6$
$\left(4x+9y\right)\left(4x-8y\right)$
$\frac{\left(3^{2}\right)^{3}\times3^{3}}{3^{4}\times3^{2}}$
$arctan\left(sin\left(\frac{\pi\:}{2}\right)\right)$
$\left(2+2\cot^2\left(x\right)\right)\cos\left(x+270\right)$
$\left(-0\right)^2+4\left(-0\right)+5$
$575-\left(-54\right)$
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