7w^2-5w+9=0

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Solution for 7w^2-5w+9=0 equation:


Simplifying
7w2 + -5w + 9 = 0

Reorder the terms:
9 + -5w + 7w2 = 0

Solving
9 + -5w + 7w2 = 0

Solving for variable 'w'.

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

Divide each side by '7'.
1.285714286 + -0.7142857143w + w2 = 0

Move the constant term to the right:

Add '-1.285714286' to each side of the equation.
1.285714286 + -0.7142857143w + -1.285714286 + w2 = 0 + -1.285714286

Reorder the terms:
1.285714286 + -1.285714286 + -0.7142857143w + w2 = 0 + -1.285714286

Combine like terms: 1.285714286 + -1.285714286 = 0.000000000
0.000000000 + -0.7142857143w + w2 = 0 + -1.285714286
-0.7142857143w + w2 = 0 + -1.285714286

Combine like terms: 0 + -1.285714286 = -1.285714286
-0.7142857143w + w2 = -1.285714286

The w term is -0.7142857143w.  Take half its coefficient (-0.3571428572).
Square it (0.1275510204) and add it to both sides.

Add '0.1275510204' to each side of the equation.
-0.7142857143w + 0.1275510204 + w2 = -1.285714286 + 0.1275510204

Reorder the terms:
0.1275510204 + -0.7142857143w + w2 = -1.285714286 + 0.1275510204

Combine like terms: -1.285714286 + 0.1275510204 = -1.1581632656
0.1275510204 + -0.7142857143w + w2 = -1.1581632656

Factor a perfect square on the left side:
(w + -0.3571428572)(w + -0.3571428572) = -1.1581632656

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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