3w^2=2w+4

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Solution for 3w^2=2w+4 equation:


Simplifying
3w2 = 2w + 4

Reorder the terms:
3w2 = 4 + 2w

Solving
3w2 = 4 + 2w

Solving for variable 'w'.

Reorder the terms:
-4 + -2w + 3w2 = 4 + 2w + -4 + -2w

Reorder the terms:
-4 + -2w + 3w2 = 4 + -4 + 2w + -2w

Combine like terms: 4 + -4 = 0
-4 + -2w + 3w2 = 0 + 2w + -2w
-4 + -2w + 3w2 = 2w + -2w

Combine like terms: 2w + -2w = 0
-4 + -2w + 3w2 = 0

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

Divide each side by '3'.
-1.333333333 + -0.6666666667w + w2 = 0

Move the constant term to the right:

Add '1.333333333' to each side of the equation.
-1.333333333 + -0.6666666667w + 1.333333333 + w2 = 0 + 1.333333333

Reorder the terms:
-1.333333333 + 1.333333333 + -0.6666666667w + w2 = 0 + 1.333333333

Combine like terms: -1.333333333 + 1.333333333 = 0.000000000
0.000000000 + -0.6666666667w + w2 = 0 + 1.333333333
-0.6666666667w + w2 = 0 + 1.333333333

Combine like terms: 0 + 1.333333333 = 1.333333333
-0.6666666667w + w2 = 1.333333333

The w term is -0.6666666667w.  Take half its coefficient (-0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
-0.6666666667w + 0.1111111112 + w2 = 1.333333333 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667w + w2 = 1.333333333 + 0.1111111112

Combine like terms: 1.333333333 + 0.1111111112 = 1.4444444442
0.1111111112 + -0.6666666667w + w2 = 1.4444444442

Factor a perfect square on the left side:
(w + -0.3333333334)(w + -0.3333333334) = 1.4444444442

Calculate the square root of the right side: 1.201850425

Break this problem into two subproblems by setting 
(w + -0.3333333334) equal to 1.201850425 and -1.201850425.

Subproblem 1

w + -0.3333333334 = 1.201850425 Simplifying w + -0.3333333334 = 1.201850425 Reorder the terms: -0.3333333334 + w = 1.201850425 Solving -0.3333333334 + w = 1.201850425 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + w = 1.201850425 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + w = 1.201850425 + 0.3333333334 w = 1.201850425 + 0.3333333334 Combine like terms: 1.201850425 + 0.3333333334 = 1.5351837584 w = 1.5351837584 Simplifying w = 1.5351837584

Subproblem 2

w + -0.3333333334 = -1.201850425 Simplifying w + -0.3333333334 = -1.201850425 Reorder the terms: -0.3333333334 + w = -1.201850425 Solving -0.3333333334 + w = -1.201850425 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + w = -1.201850425 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + w = -1.201850425 + 0.3333333334 w = -1.201850425 + 0.3333333334 Combine like terms: -1.201850425 + 0.3333333334 = -0.8685170916 w = -0.8685170916 Simplifying w = -0.8685170916

Solution

The solution to the problem is based on the solutions from the subproblems. w = {1.5351837584, -0.8685170916}

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