+0

# IDK

+11
75
3

What is 9 +10?

Guest Feb 27, 2017
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#1
+1

It is 21

Guest Feb 27, 2017
#2
0

$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}\begin{pmatrix} 1\\ 2 \end{pmatrix}\sum_{}^{}\begin{bmatrix} 1 && 2 \\ 3 && 4 \end{bmatrix}=21$$

Guest Feb 27, 2017
#3
0

It's 19...

PS. I got the joke

Guest Feb 27, 2017

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