.5h^2+3h-77=0

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Solution for .5h^2+3h-77=0 equation:


Simplifying
0.5h2 + 3h + -77 = 0

Reorder the terms:
-77 + 3h + 0.5h2 = 0

Solving
-77 + 3h + 0.5h2 = 0

Solving for variable 'h'.

Begin completing the square.  Divide all terms by
0.5 the coefficient of the squared term: 

Divide each side by '0.5'.
-154 + 6h + h2 = 0

Move the constant term to the right:

Add '154' to each side of the equation.
-154 + 6h + 154 + h2 = 0 + 154

Reorder the terms:
-154 + 154 + 6h + h2 = 0 + 154

Combine like terms: -154 + 154 = 0
0 + 6h + h2 = 0 + 154
6h + h2 = 0 + 154

Combine like terms: 0 + 154 = 154
6h + h2 = 154

The h term is 6h.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6h + 9 + h2 = 154 + 9

Reorder the terms:
9 + 6h + h2 = 154 + 9

Combine like terms: 154 + 9 = 163
9 + 6h + h2 = 163

Factor a perfect square on the left side:
(h + 3)(h + 3) = 163

Calculate the square root of the right side: 12.767145335

Break this problem into two subproblems by setting 
(h + 3) equal to 12.767145335 and -12.767145335.

Subproblem 1

h + 3 = 12.767145335 Simplifying h + 3 = 12.767145335 Reorder the terms: 3 + h = 12.767145335 Solving 3 + h = 12.767145335 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + h = 12.767145335 + -3 Combine like terms: 3 + -3 = 0 0 + h = 12.767145335 + -3 h = 12.767145335 + -3 Combine like terms: 12.767145335 + -3 = 9.767145335 h = 9.767145335 Simplifying h = 9.767145335

Subproblem 2

h + 3 = -12.767145335 Simplifying h + 3 = -12.767145335 Reorder the terms: 3 + h = -12.767145335 Solving 3 + h = -12.767145335 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + h = -12.767145335 + -3 Combine like terms: 3 + -3 = 0 0 + h = -12.767145335 + -3 h = -12.767145335 + -3 Combine like terms: -12.767145335 + -3 = -15.767145335 h = -15.767145335 Simplifying h = -15.767145335

Solution

The solution to the problem is based on the solutions from the subproblems. h = {9.767145335, -15.767145335}

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