h^2+20h-26=0

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Solution for h^2+20h-26=0 equation:


Simplifying
h2 + 20h + -26 = 0

Reorder the terms:
-26 + 20h + h2 = 0

Solving
-26 + 20h + h2 = 0

Solving for variable 'h'.

Begin completing the square.

Move the constant term to the right:

Add '26' to each side of the equation.
-26 + 20h + 26 + h2 = 0 + 26

Reorder the terms:
-26 + 26 + 20h + h2 = 0 + 26

Combine like terms: -26 + 26 = 0
0 + 20h + h2 = 0 + 26
20h + h2 = 0 + 26

Combine like terms: 0 + 26 = 26
20h + h2 = 26

The h term is 20h.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20h + 100 + h2 = 26 + 100

Reorder the terms:
100 + 20h + h2 = 26 + 100

Combine like terms: 26 + 100 = 126
100 + 20h + h2 = 126

Factor a perfect square on the left side:
(h + 10)(h + 10) = 126

Calculate the square root of the right side: 11.22497216

Break this problem into two subproblems by setting 
(h + 10) equal to 11.22497216 and -11.22497216.

Subproblem 1

h + 10 = 11.22497216 Simplifying h + 10 = 11.22497216 Reorder the terms: 10 + h = 11.22497216 Solving 10 + h = 11.22497216 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + h = 11.22497216 + -10 Combine like terms: 10 + -10 = 0 0 + h = 11.22497216 + -10 h = 11.22497216 + -10 Combine like terms: 11.22497216 + -10 = 1.22497216 h = 1.22497216 Simplifying h = 1.22497216

Subproblem 2

h + 10 = -11.22497216 Simplifying h + 10 = -11.22497216 Reorder the terms: 10 + h = -11.22497216 Solving 10 + h = -11.22497216 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + h = -11.22497216 + -10 Combine like terms: 10 + -10 = 0 0 + h = -11.22497216 + -10 h = -11.22497216 + -10 Combine like terms: -11.22497216 + -10 = -21.22497216 h = -21.22497216 Simplifying h = -21.22497216

Solution

The solution to the problem is based on the solutions from the subproblems. h = {1.22497216, -21.22497216}

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