5w^2-12w=135

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Solution for 5w^2-12w=135 equation:


Simplifying
5w2 + -12w = 135

Reorder the terms:
-12w + 5w2 = 135

Solving
-12w + 5w2 = 135

Solving for variable 'w'.

Reorder the terms:
-135 + -12w + 5w2 = 135 + -135

Combine like terms: 135 + -135 = 0
-135 + -12w + 5w2 = 0

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

Divide each side by '5'.
-27 + -2.4w + w2 = 0

Move the constant term to the right:

Add '27' to each side of the equation.
-27 + -2.4w + 27 + w2 = 0 + 27

Reorder the terms:
-27 + 27 + -2.4w + w2 = 0 + 27

Combine like terms: -27 + 27 = 0
0 + -2.4w + w2 = 0 + 27
-2.4w + w2 = 0 + 27

Combine like terms: 0 + 27 = 27
-2.4w + w2 = 27

The w term is -2.4w.  Take half its coefficient (-1.2).
Square it (1.44) and add it to both sides.

Add '1.44' to each side of the equation.
-2.4w + 1.44 + w2 = 27 + 1.44

Reorder the terms:
1.44 + -2.4w + w2 = 27 + 1.44

Combine like terms: 27 + 1.44 = 28.44
1.44 + -2.4w + w2 = 28.44

Factor a perfect square on the left side:
(w + -1.2)(w + -1.2) = 28.44

Calculate the square root of the right side: 5.33291665

Break this problem into two subproblems by setting 
(w + -1.2) equal to 5.33291665 and -5.33291665.

Subproblem 1

w + -1.2 = 5.33291665 Simplifying w + -1.2 = 5.33291665 Reorder the terms: -1.2 + w = 5.33291665 Solving -1.2 + w = 5.33291665 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '1.2' to each side of the equation. -1.2 + 1.2 + w = 5.33291665 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + w = 5.33291665 + 1.2 w = 5.33291665 + 1.2 Combine like terms: 5.33291665 + 1.2 = 6.53291665 w = 6.53291665 Simplifying w = 6.53291665

Subproblem 2

w + -1.2 = -5.33291665 Simplifying w + -1.2 = -5.33291665 Reorder the terms: -1.2 + w = -5.33291665 Solving -1.2 + w = -5.33291665 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '1.2' to each side of the equation. -1.2 + 1.2 + w = -5.33291665 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + w = -5.33291665 + 1.2 w = -5.33291665 + 1.2 Combine like terms: -5.33291665 + 1.2 = -4.13291665 w = -4.13291665 Simplifying w = -4.13291665

Solution

The solution to the problem is based on the solutions from the subproblems. w = {6.53291665, -4.13291665}

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