h^2-2.5h-1.25=0

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Solution for h^2-2.5h-1.25=0 equation:


Simplifying
h2 + -2.5h + -1.25 = 0

Reorder the terms:
-1.25 + -2.5h + h2 = 0

Solving
-1.25 + -2.5h + h2 = 0

Solving for variable 'h'.

Begin completing the square.

Move the constant term to the right:

Add '1.25' to each side of the equation.
-1.25 + -2.5h + 1.25 + h2 = 0 + 1.25

Reorder the terms:
-1.25 + 1.25 + -2.5h + h2 = 0 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + -2.5h + h2 = 0 + 1.25
-2.5h + h2 = 0 + 1.25

Combine like terms: 0 + 1.25 = 1.25
-2.5h + h2 = 1.25

The h term is -2.5h.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5h + 1.5625 + h2 = 1.25 + 1.5625

Reorder the terms:
1.5625 + -2.5h + h2 = 1.25 + 1.5625

Combine like terms: 1.25 + 1.5625 = 2.8125
1.5625 + -2.5h + h2 = 2.8125

Factor a perfect square on the left side:
(h + -1.25)(h + -1.25) = 2.8125

Calculate the square root of the right side: 1.677050983

Break this problem into two subproblems by setting 
(h + -1.25) equal to 1.677050983 and -1.677050983.

Subproblem 1

h + -1.25 = 1.677050983 Simplifying h + -1.25 = 1.677050983 Reorder the terms: -1.25 + h = 1.677050983 Solving -1.25 + h = 1.677050983 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + h = 1.677050983 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + h = 1.677050983 + 1.25 h = 1.677050983 + 1.25 Combine like terms: 1.677050983 + 1.25 = 2.927050983 h = 2.927050983 Simplifying h = 2.927050983

Subproblem 2

h + -1.25 = -1.677050983 Simplifying h + -1.25 = -1.677050983 Reorder the terms: -1.25 + h = -1.677050983 Solving -1.25 + h = -1.677050983 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + h = -1.677050983 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + h = -1.677050983 + 1.25 h = -1.677050983 + 1.25 Combine like terms: -1.677050983 + 1.25 = -0.427050983 h = -0.427050983 Simplifying h = -0.427050983

Solution

The solution to the problem is based on the solutions from the subproblems. h = {2.927050983, -0.427050983}

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