w^2+30w-480=0

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Solution for w^2+30w-480=0 equation:


Simplifying
w2 + 30w + -480 = 0

Reorder the terms:
-480 + 30w + w2 = 0

Solving
-480 + 30w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '480' to each side of the equation.
-480 + 30w + 480 + w2 = 0 + 480

Reorder the terms:
-480 + 480 + 30w + w2 = 0 + 480

Combine like terms: -480 + 480 = 0
0 + 30w + w2 = 0 + 480
30w + w2 = 0 + 480

Combine like terms: 0 + 480 = 480
30w + w2 = 480

The w term is 30w.  Take half its coefficient (15).
Square it (225) and add it to both sides.

Add '225' to each side of the equation.
30w + 225 + w2 = 480 + 225

Reorder the terms:
225 + 30w + w2 = 480 + 225

Combine like terms: 480 + 225 = 705
225 + 30w + w2 = 705

Factor a perfect square on the left side:
(w + 15)(w + 15) = 705

Calculate the square root of the right side: 26.551836095

Break this problem into two subproblems by setting 
(w + 15) equal to 26.551836095 and -26.551836095.

Subproblem 1

w + 15 = 26.551836095 Simplifying w + 15 = 26.551836095 Reorder the terms: 15 + w = 26.551836095 Solving 15 + w = 26.551836095 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + w = 26.551836095 + -15 Combine like terms: 15 + -15 = 0 0 + w = 26.551836095 + -15 w = 26.551836095 + -15 Combine like terms: 26.551836095 + -15 = 11.551836095 w = 11.551836095 Simplifying w = 11.551836095

Subproblem 2

w + 15 = -26.551836095 Simplifying w + 15 = -26.551836095 Reorder the terms: 15 + w = -26.551836095 Solving 15 + w = -26.551836095 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + w = -26.551836095 + -15 Combine like terms: 15 + -15 = 0 0 + w = -26.551836095 + -15 w = -26.551836095 + -15 Combine like terms: -26.551836095 + -15 = -41.551836095 w = -41.551836095 Simplifying w = -41.551836095

Solution

The solution to the problem is based on the solutions from the subproblems. w = {11.551836095, -41.551836095}

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