User:Tyg13/Sandbox
x
2
=
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x
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=
{
x
C
A
N
=
2
O
R
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−
2
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x
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=
2
{\displaystyle {\sqrt {x^{2}}}=\left|x\right|={\begin{cases}xCAN=2OR=-2,\left|x\right|=2\end{cases}}}