12−7b+10b=1812-7b+10b=1812−7b+10b=18
z2−24z+49z^2-24z+49z2−24z+49
−3abc−4acb+5abd-3abc-4acb+5abd−3abc−4acb+5abd
−4x−6⋅5x9-4x^{-6}\cdot5x^9−4x−6⋅5x9
(7n6h5)3\left(7n^6h^5\right)^3(7n6h5)3
15x−9<6x−1315x-9<6x-1315x−9<6x−13
ddx7x2\frac{d}{dx}7x^2dxd7x2
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