(9y)(9y)=y

Solution for (9y)(9y)=y equation:

Simplifying
(9y)(9y) = y

Remove parenthesis around (9y)
9y(9y) = y

Remove parenthesis around (9y)
9y * 9y = y

Reorder the terms for easier multiplication:
9 * 9y * y = y

Multiply 9 * 9
81y * y = y

Multiply y * y
81y2 = y

Solving
81y2 = y

Solving for variable 'y'.

Reorder the terms:
-1y + 81y2 = y + -1y

Combine like terms: y + -1y = 0
-1y + 81y2 = 0

Factor out the Greatest Common Factor (GCF), 'y'.
y(-1 + 81y) = 0

Subproblem 1
Set the factor 'y' equal to zero and attempt to solve:

Simplifying
y = 0

Solving
y = 0

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

Simplifying
y = 0
Subproblem 2
Set the factor '(-1 + 81y)' equal to zero and attempt to solve:

Simplifying
-1 + 81y = 0

Solving
-1 + 81y = 0

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

Add '1' to each side of the equation.
-1 + 1 + 81y = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 81y = 0 + 1
81y = 0 + 1

Combine like terms: 0 + 1 = 1
81y = 1

Divide each side by '81'.
y = 0.01234567901

Simplifying
y = 0.01234567901
Solution
y = {0, 0.01234567901}