$\left(x^2y^{11}-9\right)^2$
$81y^2-100$
$-\left(\sin\left(x\right)-1\right)\cdot\left(\sin\left(x\right)+1\right)$
$3-2^2-1\cdot3$
$15a\cdot b+ac$
$\sqrt{144}\cdot\left(-2\right)+3\left|-1-\left(-4^3\right)-64\right|-\left(-7^2\right)$
$2a-6$
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