2000(1+0.2)122000\left(1+0.2\right)^{12}2000(1+0.2)12
(−x2−a2)(x2−a2)\left(-x^2-a^2\right)\left(x^2-a^2\right)(−x2−a2)(x2−a2)
x2−x+10>16x^2-x+10>16x2−x+10>16
−6x3+x2x2+x−1\frac{-6x^3+x^2}{x^2+x-1}x2+x−1−6x3+x2
3ac2ab 3ac\sqrt{2ab}\:3ac2ab
s=a−b⋅72a+21a−b⋅72ba−b⋅7a+bs=\frac{a-b\cdot\sqrt{7}^{2a}+21^{a-b}\cdot\sqrt{7}^{2b}}{a-b\cdot\sqrt{7}a+b}s=a−b⋅7a+ba−b⋅72a+21a−b⋅72b
x2+3x−2+2x2−x+6x^2+3x-2+2x^2-x+6x2+3x−2+2x2−x+6
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