s^2+12s+400=

Solution for s^2+12s+400= equation:

Simplifying
s2 + 12s + 400 = 0

Reorder the terms:
400 + 12s + s2 = 0

Solving
400 + 12s + s2 = 0

Solving for variable 's'.

Begin completing the square.

Move the constant term to the right:

Add '-400' to each side of the equation.
400 + 12s + -400 + s2 = 0 + -400

Reorder the terms:
400 + -400 + 12s + s2 = 0 + -400

Combine like terms: 400 + -400 = 0
0 + 12s + s2 = 0 + -400
12s + s2 = 0 + -400

Combine like terms: 0 + -400 = -400
12s + s2 = -400

The s term is 12s.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12s + 36 + s2 = -400 + 36

Reorder the terms:
36 + 12s + s2 = -400 + 36

Combine like terms: -400 + 36 = -364
36 + 12s + s2 = -364

Factor a perfect square on the left side:
(s + 6)(s + 6) = -364

Can't calculate square root of the right side.

The solution to this equation could not be determined.