math test

Math Quiz

When $a \ne 0$, there are two solutions to $ax^2 + bx + c = 0$ and they are
$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$

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 Question 1
What is the square root of 2.

 A $\sqrt{2}$ B $\sqrt{b^2}$ C $2$ D $3\sqrt{2}$ E $\frac{1}{3}$ F $y^3$
Question 1 Explanation:
This is the $\sqrt{2}$.
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$\sqrt{a^2+b^2}$
$3\times4$