h^2-28h-47=0

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Solution for h^2-28h-47=0 equation:


Simplifying
h2 + -28h + -47 = 0

Reorder the terms:
-47 + -28h + h2 = 0

Solving
-47 + -28h + h2 = 0

Solving for variable 'h'.

Begin completing the square.

Move the constant term to the right:

Add '47' to each side of the equation.
-47 + -28h + 47 + h2 = 0 + 47

Reorder the terms:
-47 + 47 + -28h + h2 = 0 + 47

Combine like terms: -47 + 47 = 0
0 + -28h + h2 = 0 + 47
-28h + h2 = 0 + 47

Combine like terms: 0 + 47 = 47
-28h + h2 = 47

The h term is -28h.  Take half its coefficient (-14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
-28h + 196 + h2 = 47 + 196

Reorder the terms:
196 + -28h + h2 = 47 + 196

Combine like terms: 47 + 196 = 243
196 + -28h + h2 = 243

Factor a perfect square on the left side:
(h + -14)(h + -14) = 243

Calculate the square root of the right side: 15.588457268

Break this problem into two subproblems by setting 
(h + -14) equal to 15.588457268 and -15.588457268.

Subproblem 1

h + -14 = 15.588457268 Simplifying h + -14 = 15.588457268 Reorder the terms: -14 + h = 15.588457268 Solving -14 + h = 15.588457268 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + h = 15.588457268 + 14 Combine like terms: -14 + 14 = 0 0 + h = 15.588457268 + 14 h = 15.588457268 + 14 Combine like terms: 15.588457268 + 14 = 29.588457268 h = 29.588457268 Simplifying h = 29.588457268

Subproblem 2

h + -14 = -15.588457268 Simplifying h + -14 = -15.588457268 Reorder the terms: -14 + h = -15.588457268 Solving -14 + h = -15.588457268 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + h = -15.588457268 + 14 Combine like terms: -14 + 14 = 0 0 + h = -15.588457268 + 14 h = -15.588457268 + 14 Combine like terms: -15.588457268 + 14 = -1.588457268 h = -1.588457268 Simplifying h = -1.588457268

Solution

The solution to the problem is based on the solutions from the subproblems. h = {29.588457268, -1.588457268}

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