2=2^2-4x

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Solution for 2=2^2-4x equation: 



2=2^2-4x

We move all terms to the left:

2-(2^2-4x)=0

We get rid of parentheses

4x+2-2^2=0

We add all the numbers together, and all the variables

4x-2=0

We move all terms containing x to the left, all other terms to the right

4x=2

x=2/4

x=1/2

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