$3\left(-1\right)^4-3\left(-1\right)^3-\left(-1\right)^2+3\left(-1\right)-1\:$
$\left(8x^3y-5ab^{-4}\right)^3$
$130-15000$
$2a+3a+a$
$\left(\sqrt{2}x+\left(\frac{\left(3\sqrt{2}\right)}{4}\right)\right)^2$
$-\frac{5-5\sin^2\left(a\right)}{2\cos\left(a\right)}$
$\left(5u+3\right)\left(5u-3\right)$
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