$\cos-x^2$
$-y^2+4\left(x+2\right)-5;\:x=-3;\:y=-2$
$2^2\cdot5^2$
$\frac{x-2}{5}+1\ge1$
$6\cdot\left(32-4\cdot6+2\right)-\frac{\left(7+2\cdot3\cdot4-7\cdot3\right)}{5}$
$9w^2+12w+4$
$2x^6+3x^2$
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