w^2+3w-65=0

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Solution for w^2+3w-65=0 equation:


Simplifying
w2 + 3w + -65 = 0

Reorder the terms:
-65 + 3w + w2 = 0

Solving
-65 + 3w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '65' to each side of the equation.
-65 + 3w + 65 + w2 = 0 + 65

Reorder the terms:
-65 + 65 + 3w + w2 = 0 + 65

Combine like terms: -65 + 65 = 0
0 + 3w + w2 = 0 + 65
3w + w2 = 0 + 65

Combine like terms: 0 + 65 = 65
3w + w2 = 65

The w term is 3w.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3w + 2.25 + w2 = 65 + 2.25

Reorder the terms:
2.25 + 3w + w2 = 65 + 2.25

Combine like terms: 65 + 2.25 = 67.25
2.25 + 3w + w2 = 67.25

Factor a perfect square on the left side:
(w + 1.5)(w + 1.5) = 67.25

Calculate the square root of the right side: 8.200609733

Break this problem into two subproblems by setting 
(w + 1.5) equal to 8.200609733 and -8.200609733.

Subproblem 1

w + 1.5 = 8.200609733 Simplifying w + 1.5 = 8.200609733 Reorder the terms: 1.5 + w = 8.200609733 Solving 1.5 + w = 8.200609733 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + w = 8.200609733 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + w = 8.200609733 + -1.5 w = 8.200609733 + -1.5 Combine like terms: 8.200609733 + -1.5 = 6.700609733 w = 6.700609733 Simplifying w = 6.700609733

Subproblem 2

w + 1.5 = -8.200609733 Simplifying w + 1.5 = -8.200609733 Reorder the terms: 1.5 + w = -8.200609733 Solving 1.5 + w = -8.200609733 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + w = -8.200609733 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + w = -8.200609733 + -1.5 w = -8.200609733 + -1.5 Combine like terms: -8.200609733 + -1.5 = -9.700609733 w = -9.700609733 Simplifying w = -9.700609733

Solution

The solution to the problem is based on the solutions from the subproblems. w = {6.700609733, -9.700609733}

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