w^2-2w-10=0

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Solution for w^2-2w-10=0 equation:


Simplifying
w2 + -2w + -10 = 0

Reorder the terms:
-10 + -2w + w2 = 0

Solving
-10 + -2w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + -2w + 10 + w2 = 0 + 10

Reorder the terms:
-10 + 10 + -2w + w2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -2w + w2 = 0 + 10
-2w + w2 = 0 + 10

Combine like terms: 0 + 10 = 10
-2w + w2 = 10

The w term is -2w.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2w + 1 + w2 = 10 + 1

Reorder the terms:
1 + -2w + w2 = 10 + 1

Combine like terms: 10 + 1 = 11
1 + -2w + w2 = 11

Factor a perfect square on the left side:
(w + -1)(w + -1) = 11

Calculate the square root of the right side: 3.31662479

Break this problem into two subproblems by setting 
(w + -1) equal to 3.31662479 and -3.31662479.

Subproblem 1

w + -1 = 3.31662479 Simplifying w + -1 = 3.31662479 Reorder the terms: -1 + w = 3.31662479 Solving -1 + w = 3.31662479 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + w = 3.31662479 + 1 Combine like terms: -1 + 1 = 0 0 + w = 3.31662479 + 1 w = 3.31662479 + 1 Combine like terms: 3.31662479 + 1 = 4.31662479 w = 4.31662479 Simplifying w = 4.31662479

Subproblem 2

w + -1 = -3.31662479 Simplifying w + -1 = -3.31662479 Reorder the terms: -1 + w = -3.31662479 Solving -1 + w = -3.31662479 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + w = -3.31662479 + 1 Combine like terms: -1 + 1 = 0 0 + w = -3.31662479 + 1 w = -3.31662479 + 1 Combine like terms: -3.31662479 + 1 = -2.31662479 w = -2.31662479 Simplifying w = -2.31662479

Solution

The solution to the problem is based on the solutions from the subproblems. w = {4.31662479, -2.31662479}

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