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Popular >

sqrt(3x+81)+9=x

Solution

3 x + 81 + 9 = x

Solution

x = 21

Solution steps

3 x + 81 + 9 = x

Remove square roots

3 x + 81 = x^{2} - 18 x + 81

Solve

3 x + 81 = x^{2} - 18 x + 81 : x = 21, x = 0

x = 21, x = 0

Verify Solutions:

x = 21

True

, x = 0

False

The solution is

x = 21

Popular Examples

sqrt(y^2-7y)-sqrt(y+9)=0

y^{2} - 7 y - y + 9 = 0

\sqrt[4]{3-8x^2}=2x

sqrt(-2x+4)+sqrt(2x+5)=3

- 2 x + 4 + 2 x + 5 = 3

x^{3} = a x

x + 4 = 8 - x

Frequently Asked Questions (FAQ)

What is the answer to sqrt(3x+81)+9=x ?
The answer to sqrt(3x+81)+9=x is x=21
Solve for x: sqrt(3x+81)+9=x
The solution is x=21