Demo
= a2a^2a2
= axyza^{xyz}axyz
= aia_iai​
= ()[]\big( \big) \big[ \big]()[]
= ×÷\times\div×÷
= ab\frac{a}{b}ba​
= ab\sqrt{ab}ab​
= 2x2+11x+122x^2+11x+122x2+11x+12
= −b±b2−4ac2a\frac{-b\pm\sqrt{b^2-4ac}}{2a}2a−b±b2−4ac​​
= b2a2−b24\frac{b}{2}\sqrt{a^2-\frac{b^2}{4}}2b​a2−4b2​​

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