x^2+y^2+z^2-9z=0

Solution for x^2+y^2+z^2-9z=0 equation:

Simplifying
x2 + y2 + z2 + -9z = 0

Reorder the terms:
x2 + y2 + -9z + z2 = 0

Solving
x2 + y2 + -9z + z2 = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1y2' to each side of the equation.
x2 + y2 + -9z + -1y2 + z2 = 0 + -1y2

Reorder the terms:
x2 + y2 + -1y2 + -9z + z2 = 0 + -1y2

Combine like terms: y2 + -1y2 = 0
x2 + 0 + -9z + z2 = 0 + -1y2
x2 + -9z + z2 = 0 + -1y2
Remove the zero:
x2 + -9z + z2 = -1y2

Add '9z' to each side of the equation.
x2 + -9z + 9z + z2 = -1y2 + 9z

Combine like terms: -9z + 9z = 0
x2 + 0 + z2 = -1y2 + 9z
x2 + z2 = -1y2 + 9z

Add '-1z2' to each side of the equation.
x2 + z2 + -1z2 = -1y2 + 9z + -1z2

Combine like terms: z2 + -1z2 = 0
x2 + 0 = -1y2 + 9z + -1z2
x2 = -1y2 + 9z + -1z2

Simplifying
x2 = -1y2 + 9z + -1z2

Reorder the terms:
x2 + y2 + -9z + z2 = -1y2 + y2 + 9z + -9z + -1z2 + z2

Combine like terms: -1y2 + y2 = 0
x2 + y2 + -9z + z2 = 0 + 9z + -9z + -1z2 + z2
x2 + y2 + -9z + z2 = 9z + -9z + -1z2 + z2

Combine like terms: 9z + -9z = 0
x2 + y2 + -9z + z2 = 0 + -1z2 + z2
x2 + y2 + -9z + z2 = -1z2 + z2

Combine like terms: -1z2 + z2 = 0
x2 + y2 + -9z + z2 = 0

The solution to this equation could not be determined.