-w^2+5w=3

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Solution for -w^2+5w=3 equation:


Simplifying
-1w2 + 5w = 3

Reorder the terms:
5w + -1w2 = 3

Solving
5w + -1w2 = 3

Solving for variable 'w'.

Reorder the terms:
-3 + 5w + -1w2 = 3 + -3

Combine like terms: 3 + -3 = 0
-3 + 5w + -1w2 = 0

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

Divide each side by '-1'.
3 + -5w + w2 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -5w + -3 + w2 = 0 + -3

Reorder the terms:
3 + -3 + -5w + w2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -5w + w2 = 0 + -3
-5w + w2 = 0 + -3

Combine like terms: 0 + -3 = -3
-5w + w2 = -3

The w term is -5w.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5w + 6.25 + w2 = -3 + 6.25

Reorder the terms:
6.25 + -5w + w2 = -3 + 6.25

Combine like terms: -3 + 6.25 = 3.25
6.25 + -5w + w2 = 3.25

Factor a perfect square on the left side:
(w + -2.5)(w + -2.5) = 3.25

Calculate the square root of the right side: 1.802775638

Break this problem into two subproblems by setting 
(w + -2.5) equal to 1.802775638 and -1.802775638.

Subproblem 1

w + -2.5 = 1.802775638 Simplifying w + -2.5 = 1.802775638 Reorder the terms: -2.5 + w = 1.802775638 Solving -2.5 + w = 1.802775638 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + w = 1.802775638 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + w = 1.802775638 + 2.5 w = 1.802775638 + 2.5 Combine like terms: 1.802775638 + 2.5 = 4.302775638 w = 4.302775638 Simplifying w = 4.302775638

Subproblem 2

w + -2.5 = -1.802775638 Simplifying w + -2.5 = -1.802775638 Reorder the terms: -2.5 + w = -1.802775638 Solving -2.5 + w = -1.802775638 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + w = -1.802775638 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + w = -1.802775638 + 2.5 w = -1.802775638 + 2.5 Combine like terms: -1.802775638 + 2.5 = 0.697224362 w = 0.697224362 Simplifying w = 0.697224362

Solution

The solution to the problem is based on the solutions from the subproblems. w = {4.302775638, 0.697224362}

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