h^2+6h-51=0

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Solution for h^2+6h-51=0 equation:


Simplifying
h2 + 6h + -51 = 0

Reorder the terms:
-51 + 6h + h2 = 0

Solving
-51 + 6h + h2 = 0

Solving for variable 'h'.

Begin completing the square.

Move the constant term to the right:

Add '51' to each side of the equation.
-51 + 6h + 51 + h2 = 0 + 51

Reorder the terms:
-51 + 51 + 6h + h2 = 0 + 51

Combine like terms: -51 + 51 = 0
0 + 6h + h2 = 0 + 51
6h + h2 = 0 + 51

Combine like terms: 0 + 51 = 51
6h + h2 = 51

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 = 51 + 9

Reorder the terms:
9 + 6h + h2 = 51 + 9

Combine like terms: 51 + 9 = 60
9 + 6h + h2 = 60

Factor a perfect square on the left side:
(h + 3)(h + 3) = 60

Calculate the square root of the right side: 7.745966692

Break this problem into two subproblems by setting 
(h + 3) equal to 7.745966692 and -7.745966692.

Subproblem 1

h + 3 = 7.745966692 Simplifying h + 3 = 7.745966692 Reorder the terms: 3 + h = 7.745966692 Solving 3 + h = 7.745966692 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 = 7.745966692 + -3 Combine like terms: 3 + -3 = 0 0 + h = 7.745966692 + -3 h = 7.745966692 + -3 Combine like terms: 7.745966692 + -3 = 4.745966692 h = 4.745966692 Simplifying h = 4.745966692

Subproblem 2

h + 3 = -7.745966692 Simplifying h + 3 = -7.745966692 Reorder the terms: 3 + h = -7.745966692 Solving 3 + h = -7.745966692 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 = -7.745966692 + -3 Combine like terms: 3 + -3 = 0 0 + h = -7.745966692 + -3 h = -7.745966692 + -3 Combine like terms: -7.745966692 + -3 = -10.745966692 h = -10.745966692 Simplifying h = -10.745966692

Solution

The solution to the problem is based on the solutions from the subproblems. h = {4.745966692, -10.745966692}

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