(2c-1)^2-4=21

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Solution for (2c-1)^2-4=21 equation: 



(2c-1)^2-4=21

We move all terms to the left:

(2c-1)^2-4-(21)=0

We add all the numbers together, and all the variables

(2c-1)^2-25=0

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

(2c-1)^2=25

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