8w^2+18w+81=0

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Solution for 8w^2+18w+81=0 equation:


Simplifying
8w2 + 18w + 81 = 0

Reorder the terms:
81 + 18w + 8w2 = 0

Solving
81 + 18w + 8w2 = 0

Solving for variable 'w'.

Begin completing the square.  Divide all terms by
8 the coefficient of the squared term: 

Divide each side by '8'.
10.125 + 2.25w + w2 = 0

Move the constant term to the right:

Add '-10.125' to each side of the equation.
10.125 + 2.25w + -10.125 + w2 = 0 + -10.125

Reorder the terms:
10.125 + -10.125 + 2.25w + w2 = 0 + -10.125

Combine like terms: 10.125 + -10.125 = 0.000
0.000 + 2.25w + w2 = 0 + -10.125
2.25w + w2 = 0 + -10.125

Combine like terms: 0 + -10.125 = -10.125
2.25w + w2 = -10.125

The w term is 2.25w.  Take half its coefficient (1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
2.25w + 1.265625 + w2 = -10.125 + 1.265625

Reorder the terms:
1.265625 + 2.25w + w2 = -10.125 + 1.265625

Combine like terms: -10.125 + 1.265625 = -8.859375
1.265625 + 2.25w + w2 = -8.859375

Factor a perfect square on the left side:
(w + 1.125)(w + 1.125) = -8.859375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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