n^2+12n+40=0

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Solution for n^2+12n+40=0 equation:


Simplifying
n2 + 12n + 40 = 0

Reorder the terms:
40 + 12n + n2 = 0

Solving
40 + 12n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '-40' to each side of the equation.
40 + 12n + -40 + n2 = 0 + -40

Reorder the terms:
40 + -40 + 12n + n2 = 0 + -40

Combine like terms: 40 + -40 = 0
0 + 12n + n2 = 0 + -40
12n + n2 = 0 + -40

Combine like terms: 0 + -40 = -40
12n + n2 = -40

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

Add '36' to each side of the equation.
12n + 36 + n2 = -40 + 36

Reorder the terms:
36 + 12n + n2 = -40 + 36

Combine like terms: -40 + 36 = -4
36 + 12n + n2 = -4

Factor a perfect square on the left side:
(n + 6)(n + 6) = -4

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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