w^2+49=2w^2+18w+37

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Solution for w^2+49=2w^2+18w+37 equation:


Simplifying
w2 + 49 = 2w2 + 18w + 37

Reorder the terms:
49 + w2 = 2w2 + 18w + 37

Reorder the terms:
49 + w2 = 37 + 18w + 2w2

Solving
49 + w2 = 37 + 18w + 2w2

Solving for variable 'w'.

Reorder the terms:
49 + -37 + -18w + w2 + -2w2 = 37 + 18w + 2w2 + -37 + -18w + -2w2

Combine like terms: 49 + -37 = 12
12 + -18w + w2 + -2w2 = 37 + 18w + 2w2 + -37 + -18w + -2w2

Combine like terms: w2 + -2w2 = -1w2
12 + -18w + -1w2 = 37 + 18w + 2w2 + -37 + -18w + -2w2

Reorder the terms:
12 + -18w + -1w2 = 37 + -37 + 18w + -18w + 2w2 + -2w2

Combine like terms: 37 + -37 = 0
12 + -18w + -1w2 = 0 + 18w + -18w + 2w2 + -2w2
12 + -18w + -1w2 = 18w + -18w + 2w2 + -2w2

Combine like terms: 18w + -18w = 0
12 + -18w + -1w2 = 0 + 2w2 + -2w2
12 + -18w + -1w2 = 2w2 + -2w2

Combine like terms: 2w2 + -2w2 = 0
12 + -18w + -1w2 = 0

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

Divide each side by '-1'.
-12 + 18w + w2 = 0

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + 18w + 12 + w2 = 0 + 12

Reorder the terms:
-12 + 12 + 18w + w2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 18w + w2 = 0 + 12
18w + w2 = 0 + 12

Combine like terms: 0 + 12 = 12
18w + w2 = 12

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

Add '81' to each side of the equation.
18w + 81 + w2 = 12 + 81

Reorder the terms:
81 + 18w + w2 = 12 + 81

Combine like terms: 12 + 81 = 93
81 + 18w + w2 = 93

Factor a perfect square on the left side:
(w + 9)(w + 9) = 93

Calculate the square root of the right side: 9.643650761

Break this problem into two subproblems by setting 
(w + 9) equal to 9.643650761 and -9.643650761.

Subproblem 1

w + 9 = 9.643650761 Simplifying w + 9 = 9.643650761 Reorder the terms: 9 + w = 9.643650761 Solving 9 + w = 9.643650761 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + w = 9.643650761 + -9 Combine like terms: 9 + -9 = 0 0 + w = 9.643650761 + -9 w = 9.643650761 + -9 Combine like terms: 9.643650761 + -9 = 0.643650761 w = 0.643650761 Simplifying w = 0.643650761

Subproblem 2

w + 9 = -9.643650761 Simplifying w + 9 = -9.643650761 Reorder the terms: 9 + w = -9.643650761 Solving 9 + w = -9.643650761 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + w = -9.643650761 + -9 Combine like terms: 9 + -9 = 0 0 + w = -9.643650761 + -9 w = -9.643650761 + -9 Combine like terms: -9.643650761 + -9 = -18.643650761 w = -18.643650761 Simplifying w = -18.643650761

Solution

The solution to the problem is based on the solutions from the subproblems. w = {0.643650761, -18.643650761}

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