0=2w^2-3w-10

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Solution for 0=2w^2-3w-10 equation:


Simplifying
0 = 2w2 + -3w + -10

Reorder the terms:
0 = -10 + -3w + 2w2

Solving
0 = -10 + -3w + 2w2

Solving for variable 'w'.

Combine like terms: 0 + 10 = 10
10 + 3w + -2w2 = -10 + -3w + 2w2 + 10 + 3w + -2w2

Reorder the terms:
10 + 3w + -2w2 = -10 + 10 + -3w + 3w + 2w2 + -2w2

Combine like terms: -10 + 10 = 0
10 + 3w + -2w2 = 0 + -3w + 3w + 2w2 + -2w2
10 + 3w + -2w2 = -3w + 3w + 2w2 + -2w2

Combine like terms: -3w + 3w = 0
10 + 3w + -2w2 = 0 + 2w2 + -2w2
10 + 3w + -2w2 = 2w2 + -2w2

Combine like terms: 2w2 + -2w2 = 0
10 + 3w + -2w2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-5 + -1.5w + w2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -1.5w + 5 + w2 = 0 + 5

Reorder the terms:
-5 + 5 + -1.5w + w2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -1.5w + w2 = 0 + 5
-1.5w + w2 = 0 + 5

Combine like terms: 0 + 5 = 5
-1.5w + w2 = 5

The w term is -1.5w.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5w + 0.5625 + w2 = 5 + 0.5625

Reorder the terms:
0.5625 + -1.5w + w2 = 5 + 0.5625

Combine like terms: 5 + 0.5625 = 5.5625
0.5625 + -1.5w + w2 = 5.5625

Factor a perfect square on the left side:
(w + -0.75)(w + -0.75) = 5.5625

Calculate the square root of the right side: 2.358495283

Break this problem into two subproblems by setting 
(w + -0.75) equal to 2.358495283 and -2.358495283.

Subproblem 1

w + -0.75 = 2.358495283 Simplifying w + -0.75 = 2.358495283 Reorder the terms: -0.75 + w = 2.358495283 Solving -0.75 + w = 2.358495283 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + w = 2.358495283 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + w = 2.358495283 + 0.75 w = 2.358495283 + 0.75 Combine like terms: 2.358495283 + 0.75 = 3.108495283 w = 3.108495283 Simplifying w = 3.108495283

Subproblem 2

w + -0.75 = -2.358495283 Simplifying w + -0.75 = -2.358495283 Reorder the terms: -0.75 + w = -2.358495283 Solving -0.75 + w = -2.358495283 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + w = -2.358495283 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + w = -2.358495283 + 0.75 w = -2.358495283 + 0.75 Combine like terms: -2.358495283 + 0.75 = -1.608495283 w = -1.608495283 Simplifying w = -1.608495283

Solution

The solution to the problem is based on the solutions from the subproblems. w = {3.108495283, -1.608495283}

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