(9y+9)(9y+9)=

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

Simplifying
(9y + 9)(9y + 9) = 0

Reorder the terms:
(9 + 9y)(9y + 9) = 0

Reorder the terms:
(9 + 9y)(9 + 9y) = 0

Multiply (9 + 9y) * (9 + 9y)
(9(9 + 9y) + 9y * (9 + 9y)) = 0
((9 * 9 + 9y * 9) + 9y * (9 + 9y)) = 0
((81 + 81y) + 9y * (9 + 9y)) = 0
(81 + 81y + (9 * 9y + 9y * 9y)) = 0
(81 + 81y + (81y + 81y2)) = 0

Combine like terms: 81y + 81y = 162y
(81 + 162y + 81y2) = 0

Solving
81 + 162y + 81y2 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '81'.
81(1 + 2y + y2) = 0

Factor a trinomial.
81((1 + y)(1 + y)) = 0

Ignore the factor 81.
Subproblem 1
Set the factor '(1 + y)' equal to zero and attempt to solve:

Simplifying
1 + y = 0

Solving
1 + y = 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 + y = 0 + -1

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

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

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

Simplifying
1 + y = 0

Solving
1 + y = 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 + y = 0 + -1

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

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

Simplifying
y = -1
Solution
y = {-1, -1}