(0.5+x)2=21

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Solution for (0.5+x)2=21 equation:



(0.5+x)2=21
We move all terms to the left:
(0.5+x)2-(21)=0
We add all the numbers together, and all the variables
(x+0.5)2-21=0
We multiply parentheses
2x+1-21=0
We add all the numbers together, and all the variables
2x-20=0
We move all terms containing x to the left, all other terms to the right
2x=20
x=20/2
x=10

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