x^2+18x+80=-6

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Solution for x^2+18x+80=-6 equation:


Simplifying
x2 + 18x + 80 = -6

Reorder the terms:
80 + 18x + x2 = -6

Solving
80 + 18x + x2 = -6

Solving for variable 'x'.

Reorder the terms:
80 + 6 + 18x + x2 = -6 + 6

Combine like terms: 80 + 6 = 86
86 + 18x + x2 = -6 + 6

Combine like terms: -6 + 6 = 0
86 + 18x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-86' to each side of the equation.
86 + 18x + -86 + x2 = 0 + -86

Reorder the terms:
86 + -86 + 18x + x2 = 0 + -86

Combine like terms: 86 + -86 = 0
0 + 18x + x2 = 0 + -86
18x + x2 = 0 + -86

Combine like terms: 0 + -86 = -86
18x + x2 = -86

The x term is 18x.  Take half its coefficient (9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
18x + 81 + x2 = -86 + 81

Reorder the terms:
81 + 18x + x2 = -86 + 81

Combine like terms: -86 + 81 = -5
81 + 18x + x2 = -5

Factor a perfect square on the left side:
(x + 9)(x + 9) = -5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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