What is the answer to sqrt(\sqrt{x+9)+x}=9 ?

The answer to sqrt(\sqrt{x+9)+x}=9 is x=72

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sqrt(\sqrt{x+9)+x}=9

x + 9 + x = 9

x = 72

Solution steps

x + 9 + x = 9

Remove square roots

x + 9 = 6561 - 162 x + x^{2}

Solve

x + 9 = 6561 - 162 x + x^{2} : x = 91, x = 72

x = 91, x = 72

Verify Solutions:

x = 91

False

, x = 72

True

The solution is

x = 72

x^{\frac{2}{3}} = 1

x^{\frac{2}{3}} = 0

7 y^{2} + 15 y - 2 y = 5 + y

8 - 4 w = 13 + w

What is the answer to sqrt(\sqrt{x+9)+x}=9 ?
The answer to sqrt(\sqrt{x+9)+x}=9 is x=72
Solve for x: sqrt(\sqrt{x+9)+x}=9
The solution is x=72