h^2+8h-10=0

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Solution for h^2+8h-10=0 equation:


Simplifying
h2 + 8h + -10 = 0

Reorder the terms:
-10 + 8h + h2 = 0

Solving
-10 + 8h + h2 = 0

Solving for variable 'h'.

Begin completing the square.

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 8h + 10 + h2 = 0 + 10

Reorder the terms:
-10 + 10 + 8h + h2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 8h + h2 = 0 + 10
8h + h2 = 0 + 10

Combine like terms: 0 + 10 = 10
8h + h2 = 10

The h term is 8h.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8h + 16 + h2 = 10 + 16

Reorder the terms:
16 + 8h + h2 = 10 + 16

Combine like terms: 10 + 16 = 26
16 + 8h + h2 = 26

Factor a perfect square on the left side:
(h + 4)(h + 4) = 26

Calculate the square root of the right side: 5.099019514

Break this problem into two subproblems by setting 
(h + 4) equal to 5.099019514 and -5.099019514.

Subproblem 1

h + 4 = 5.099019514 Simplifying h + 4 = 5.099019514 Reorder the terms: 4 + h = 5.099019514 Solving 4 + h = 5.099019514 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + h = 5.099019514 + -4 Combine like terms: 4 + -4 = 0 0 + h = 5.099019514 + -4 h = 5.099019514 + -4 Combine like terms: 5.099019514 + -4 = 1.099019514 h = 1.099019514 Simplifying h = 1.099019514

Subproblem 2

h + 4 = -5.099019514 Simplifying h + 4 = -5.099019514 Reorder the terms: 4 + h = -5.099019514 Solving 4 + h = -5.099019514 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + h = -5.099019514 + -4 Combine like terms: 4 + -4 = 0 0 + h = -5.099019514 + -4 h = -5.099019514 + -4 Combine like terms: -5.099019514 + -4 = -9.099019514 h = -9.099019514 Simplifying h = -9.099019514

Solution

The solution to the problem is based on the solutions from the subproblems. h = {1.099019514, -9.099019514}

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