81s(81s)-1=0

Solution for 81s(81s)-1=0 equation:

Simplifying
81s(81s) + -1 = 0

Remove parenthesis around (81s)
81s * 81s + -1 = 0

Reorder the terms for easier multiplication:
81 * 81s * s + -1 = 0

Multiply 81 * 81
6561s * s + -1 = 0

Multiply s * s
6561s2 + -1 = 0

Reorder the terms:
-1 + 6561s2 = 0

Solving
-1 + 6561s2 = 0

Solving for variable 's'.

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

Add '1' to each side of the equation.
-1 + 1 + 6561s2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 6561s2 = 0 + 1
6561s2 = 0 + 1

Combine like terms: 0 + 1 = 1
6561s2 = 1

Divide each side by '6561'.
s2 = 0.0001524157903

Simplifying
s2 = 0.0001524157903

Take the square root of each side:
s = {-0.012345679, 0.012345679}