h^2+28h-8=0

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Solution for h^2+28h-8=0 equation:


Simplifying
h2 + 28h + -8 = 0

Reorder the terms:
-8 + 28h + h2 = 0

Solving
-8 + 28h + h2 = 0

Solving for variable 'h'.

Begin completing the square.

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + 28h + 8 + h2 = 0 + 8

Reorder the terms:
-8 + 8 + 28h + h2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 28h + h2 = 0 + 8
28h + h2 = 0 + 8

Combine like terms: 0 + 8 = 8
28h + h2 = 8

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 = 8 + 196

Reorder the terms:
196 + 28h + h2 = 8 + 196

Combine like terms: 8 + 196 = 204
196 + 28h + h2 = 204

Factor a perfect square on the left side:
(h + 14)(h + 14) = 204

Calculate the square root of the right side: 14.282856857

Break this problem into two subproblems by setting 
(h + 14) equal to 14.282856857 and -14.282856857.

Subproblem 1

h + 14 = 14.282856857 Simplifying h + 14 = 14.282856857 Reorder the terms: 14 + h = 14.282856857 Solving 14 + h = 14.282856857 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 = 14.282856857 + -14 Combine like terms: 14 + -14 = 0 0 + h = 14.282856857 + -14 h = 14.282856857 + -14 Combine like terms: 14.282856857 + -14 = 0.282856857 h = 0.282856857 Simplifying h = 0.282856857

Subproblem 2

h + 14 = -14.282856857 Simplifying h + 14 = -14.282856857 Reorder the terms: 14 + h = -14.282856857 Solving 14 + h = -14.282856857 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 = -14.282856857 + -14 Combine like terms: 14 + -14 = 0 0 + h = -14.282856857 + -14 h = -14.282856857 + -14 Combine like terms: -14.282856857 + -14 = -28.282856857 h = -28.282856857 Simplifying h = -28.282856857

Solution

The solution to the problem is based on the solutions from the subproblems. h = {0.282856857, -28.282856857}

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