0=w^2-2w+9

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


Simplifying
0 = w2 + -2w + 9

Reorder the terms:
0 = 9 + -2w + w2

Solving
0 = 9 + -2w + w2

Solving for variable 'w'.

Combine like terms: 0 + -9 = -9
-9 + 2w + -1w2 = 9 + -2w + w2 + -9 + 2w + -1w2

Reorder the terms:
-9 + 2w + -1w2 = 9 + -9 + -2w + 2w + w2 + -1w2

Combine like terms: 9 + -9 = 0
-9 + 2w + -1w2 = 0 + -2w + 2w + w2 + -1w2
-9 + 2w + -1w2 = -2w + 2w + w2 + -1w2

Combine like terms: -2w + 2w = 0
-9 + 2w + -1w2 = 0 + w2 + -1w2
-9 + 2w + -1w2 = w2 + -1w2

Combine like terms: w2 + -1w2 = 0
-9 + 2w + -1w2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
9 + -2w + w2 = 0

Move the constant term to the right:

Add '-9' to each side of the equation.
9 + -2w + -9 + w2 = 0 + -9

Reorder the terms:
9 + -9 + -2w + w2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -2w + w2 = 0 + -9
-2w + w2 = 0 + -9

Combine like terms: 0 + -9 = -9
-2w + w2 = -9

The w term is -2w.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2w + 1 + w2 = -9 + 1

Reorder the terms:
1 + -2w + w2 = -9 + 1

Combine like terms: -9 + 1 = -8
1 + -2w + w2 = -8

Factor a perfect square on the left side:
(w + -1)(w + -1) = -8

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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