2(h-5)h=h-10

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Solution for 2(h-5)h=h-10 equation:


Simplifying
2(h + -5) * h = h + -10

Reorder the terms:
2(-5 + h) * h = h + -10

Reorder the terms for easier multiplication:
2h(-5 + h) = h + -10
(-5 * 2h + h * 2h) = h + -10
(-10h + 2h2) = h + -10

Reorder the terms:
-10h + 2h2 = -10 + h

Solving
-10h + 2h2 = -10 + h

Solving for variable 'h'.

Reorder the terms:
10 + -10h + -1h + 2h2 = -10 + h + 10 + -1h

Combine like terms: -10h + -1h = -11h
10 + -11h + 2h2 = -10 + h + 10 + -1h

Reorder the terms:
10 + -11h + 2h2 = -10 + 10 + h + -1h

Combine like terms: -10 + 10 = 0
10 + -11h + 2h2 = 0 + h + -1h
10 + -11h + 2h2 = h + -1h

Combine like terms: h + -1h = 0
10 + -11h + 2h2 = 0

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

Divide each side by '2'.
5 + -5.5h + h2 = 0

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -5.5h + -5 + h2 = 0 + -5

Reorder the terms:
5 + -5 + -5.5h + h2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -5.5h + h2 = 0 + -5
-5.5h + h2 = 0 + -5

Combine like terms: 0 + -5 = -5
-5.5h + h2 = -5

The h term is -5.5h.  Take half its coefficient (-2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
-5.5h + 7.5625 + h2 = -5 + 7.5625

Reorder the terms:
7.5625 + -5.5h + h2 = -5 + 7.5625

Combine like terms: -5 + 7.5625 = 2.5625
7.5625 + -5.5h + h2 = 2.5625

Factor a perfect square on the left side:
(h + -2.75)(h + -2.75) = 2.5625

Calculate the square root of the right side: 1.600781059

Break this problem into two subproblems by setting 
(h + -2.75) equal to 1.600781059 and -1.600781059.

Subproblem 1

h + -2.75 = 1.600781059 Simplifying h + -2.75 = 1.600781059 Reorder the terms: -2.75 + h = 1.600781059 Solving -2.75 + h = 1.600781059 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + h = 1.600781059 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + h = 1.600781059 + 2.75 h = 1.600781059 + 2.75 Combine like terms: 1.600781059 + 2.75 = 4.350781059 h = 4.350781059 Simplifying h = 4.350781059

Subproblem 2

h + -2.75 = -1.600781059 Simplifying h + -2.75 = -1.600781059 Reorder the terms: -2.75 + h = -1.600781059 Solving -2.75 + h = -1.600781059 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + h = -1.600781059 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + h = -1.600781059 + 2.75 h = -1.600781059 + 2.75 Combine like terms: -1.600781059 + 2.75 = 1.149218941 h = 1.149218941 Simplifying h = 1.149218941

Solution

The solution to the problem is based on the solutions from the subproblems. h = {4.350781059, 1.149218941}

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