$\left(-2\right)\left(-2\right)\left(4\right)\left(-5\right)\left(1\right)\left(-1\right)$
$-2x^2+128=0$
$\frac{2}{cot^2x+1}$
$2\left(2ab\right)\left(-c\right)$
$\frac{1}{x^2\sqrt{225-x^2}}$
$\int\left(-14\sin\left(x\right)\right)dx$
$3x+21=72$
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