$1^{64}$
$\frac{1}{\cos\left(x\right)^2}-\cos\left(x\right)$
$-\left(a-6b\right)\left(a+6b\right)$
$\left(\frac{4a^3}{b^4}\right)^2$
$-5\left(4\right)\left(9\right)\left(-2\right)$
$8^2+38+5$
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