9w^2=30w-2

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Solution for 9w^2=30w-2 equation:


Simplifying
9w2 = 30w + -2

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

Solving
9w2 = -2 + 30w

Solving for variable 'w'.

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

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

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

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

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

Divide each side by '9'.
0.2222222222 + -3.333333333w + w2 = 0

Move the constant term to the right:

Add '-0.2222222222' to each side of the equation.
0.2222222222 + -3.333333333w + -0.2222222222 + w2 = 0 + -0.2222222222

Reorder the terms:
0.2222222222 + -0.2222222222 + -3.333333333w + w2 = 0 + -0.2222222222

Combine like terms: 0.2222222222 + -0.2222222222 = 0.0000000000
0.0000000000 + -3.333333333w + w2 = 0 + -0.2222222222
-3.333333333w + w2 = 0 + -0.2222222222

Combine like terms: 0 + -0.2222222222 = -0.2222222222
-3.333333333w + w2 = -0.2222222222

The w term is -3.333333333w.  Take half its coefficient (-1.666666667).
Square it (2.777777779) and add it to both sides.

Add '2.777777779' to each side of the equation.
-3.333333333w + 2.777777779 + w2 = -0.2222222222 + 2.777777779

Reorder the terms:
2.777777779 + -3.333333333w + w2 = -0.2222222222 + 2.777777779

Combine like terms: -0.2222222222 + 2.777777779 = 2.5555555568
2.777777779 + -3.333333333w + w2 = 2.5555555568

Factor a perfect square on the left side:
(w + -1.666666667)(w + -1.666666667) = 2.5555555568

Calculate the square root of the right side: 1.598610508

Break this problem into two subproblems by setting 
(w + -1.666666667) equal to 1.598610508 and -1.598610508.

Subproblem 1

w + -1.666666667 = 1.598610508 Simplifying w + -1.666666667 = 1.598610508 Reorder the terms: -1.666666667 + w = 1.598610508 Solving -1.666666667 + w = 1.598610508 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '1.666666667' to each side of the equation. -1.666666667 + 1.666666667 + w = 1.598610508 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + w = 1.598610508 + 1.666666667 w = 1.598610508 + 1.666666667 Combine like terms: 1.598610508 + 1.666666667 = 3.265277175 w = 3.265277175 Simplifying w = 3.265277175

Subproblem 2

w + -1.666666667 = -1.598610508 Simplifying w + -1.666666667 = -1.598610508 Reorder the terms: -1.666666667 + w = -1.598610508 Solving -1.666666667 + w = -1.598610508 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '1.666666667' to each side of the equation. -1.666666667 + 1.666666667 + w = -1.598610508 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + w = -1.598610508 + 1.666666667 w = -1.598610508 + 1.666666667 Combine like terms: -1.598610508 + 1.666666667 = 0.068056159 w = 0.068056159 Simplifying w = 0.068056159

Solution

The solution to the problem is based on the solutions from the subproblems. w = {3.265277175, 0.068056159}

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