4x2−4x+4224x^2-4x+\frac{4^2}{2}4x2−4x+242
(−4)(−12)−2 − (−4) \frac{\left(-4\right)\left(-12\right)}{-2\:-\:\left(-4\right)\:}−2−(−4)(−4)(−12)
∫x2+x+1x2−2x−8dx\int\frac{x^2+x+1}{x^2-2x-8}dx∫x2−2x−8x2+x+1dx
81a2−49b29a+7b\frac{81a^2-49b^2}{9a+7b}9a+7b81a2−49b2
ab2(ab)3\sqrt{ab^2\left(ab\right)}^3ab2(ab)3
3x=−273x=-273x=−27
−x≤−7-x\le-7−x≤−7
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