w^2+1=2w^2-9w+31

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Solution for w^2+1=2w^2-9w+31 equation:


Simplifying
w2 + 1 = 2w2 + -9w + 31

Reorder the terms:
1 + w2 = 2w2 + -9w + 31

Reorder the terms:
1 + w2 = 31 + -9w + 2w2

Solving
1 + w2 = 31 + -9w + 2w2

Solving for variable 'w'.

Reorder the terms:
1 + -31 + 9w + w2 + -2w2 = 31 + -9w + 2w2 + -31 + 9w + -2w2

Combine like terms: 1 + -31 = -30
-30 + 9w + w2 + -2w2 = 31 + -9w + 2w2 + -31 + 9w + -2w2

Combine like terms: w2 + -2w2 = -1w2
-30 + 9w + -1w2 = 31 + -9w + 2w2 + -31 + 9w + -2w2

Reorder the terms:
-30 + 9w + -1w2 = 31 + -31 + -9w + 9w + 2w2 + -2w2

Combine like terms: 31 + -31 = 0
-30 + 9w + -1w2 = 0 + -9w + 9w + 2w2 + -2w2
-30 + 9w + -1w2 = -9w + 9w + 2w2 + -2w2

Combine like terms: -9w + 9w = 0
-30 + 9w + -1w2 = 0 + 2w2 + -2w2
-30 + 9w + -1w2 = 2w2 + -2w2

Combine like terms: 2w2 + -2w2 = 0
-30 + 9w + -1w2 = 0

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

Divide each side by '-1'.
30 + -9w + w2 = 0

Move the constant term to the right:

Add '-30' to each side of the equation.
30 + -9w + -30 + w2 = 0 + -30

Reorder the terms:
30 + -30 + -9w + w2 = 0 + -30

Combine like terms: 30 + -30 = 0
0 + -9w + w2 = 0 + -30
-9w + w2 = 0 + -30

Combine like terms: 0 + -30 = -30
-9w + w2 = -30

The w term is -9w.  Take half its coefficient (-4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
-9w + 20.25 + w2 = -30 + 20.25

Reorder the terms:
20.25 + -9w + w2 = -30 + 20.25

Combine like terms: -30 + 20.25 = -9.75
20.25 + -9w + w2 = -9.75

Factor a perfect square on the left side:
(w + -4.5)(w + -4.5) = -9.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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