(21-x)2=38

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Solution for (21-x)2=38 equation: 



(21-x)2=38

We move all terms to the left:

(21-x)2-(38)=0

We add all the numbers together, and all the variables

(-1x+21)2-38=0

We multiply parentheses

-2x+42-38=0

We add all the numbers together, and all the variables

-2x+4=0

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

-2x=-4

x=-4/-2

x=+2

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