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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$\sqrt{a^2+b^2}$

$3\times4$