d^2+22d+121=0

Solution for d^2+22d+121=0 equation:

Simplifying
d2 + 22d + 121 = 0

Reorder the terms:
121 + 22d + d2 = 0

Solving
121 + 22d + d2 = 0

Solving for variable 'd'.

Factor a trinomial.
(11 + d)(11 + d) = 0

Subproblem 1
Set the factor '(11 + d)' equal to zero and attempt to solve:

Simplifying
11 + d = 0

Solving
11 + d = 0

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

Add '-11' to each side of the equation.
11 + -11 + d = 0 + -11

Combine like terms: 11 + -11 = 0
0 + d = 0 + -11
d = 0 + -11

Combine like terms: 0 + -11 = -11
d = -11

Simplifying
d = -11
Subproblem 2
Set the factor '(11 + d)' equal to zero and attempt to solve:

Simplifying
11 + d = 0

Solving
11 + d = 0

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

Add '-11' to each side of the equation.
11 + -11 + d = 0 + -11

Combine like terms: 11 + -11 = 0
0 + d = 0 + -11
d = 0 + -11

Combine like terms: 0 + -11 = -11
d = -11

Simplifying
d = -11
Solution
d = {-11, -11}