SOLUTION: solve in R: x= 12-sqrt(12-sqrt(x))

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Question 1121373: solve in R: x= 12-sqrt(12-sqrt(x))
Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!

.......square both sides



.....square both sides


x^4 - 48 x^3 + 840 x^2 - 6336 x-x + 17424=0

solutions:





if you verify solutions, you will notice that only will make true


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