$\frac{d^2}{dx^2}\left(y^2-x^2=\tan\left(2x\right)\right)$
$-9^2-5b^2$
$\sin\left(\frac{\pi}{3}+\frac{\pi}{4}\right)$
$7x^2-12x^2y$
$0,966\cdot5,0$
$a-2b+2c=2$
$\left(11a^5b^2-6m^3\right)^3$
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