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Last active September 24, 2022 11:05
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scratch_3.md

$$(ax^2 + bx + c = 0)$$

$$a \ne 0$$

$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}$$

$$\left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)$$

$$\sqrt{3}$$

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