$\left(-27x^2+2x-10\right)^2+\left(9+4x-6\right)-7$
$\frac{1\left(9-4\right)}{5}$
$25-+-22$
$-270\cdot8$
$\sqrt[27]{\sqrt[4]{\left(-2\right)}}$
$\left(\cos\left(45\right)+cos\left(60\right)\right)\frac{cos\left(45\right)+cos\left(60\right)}{sin\left(45\right)-sin\left(30\right)}$
$\frac{dy}{dt}+y=0$
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