(8h-1)-(h+3)h=-3

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Solution for (8h-1)-(h+3)h=-3 equation:


Simplifying
(8h + -1) + -1(h + 3) * h = -3

Reorder the terms:
(-1 + 8h) + -1(h + 3) * h = -3

Remove parenthesis around (-1 + 8h)
-1 + 8h + -1(h + 3) * h = -3

Reorder the terms:
-1 + 8h + -1(3 + h) * h = -3

Reorder the terms for easier multiplication:
-1 + 8h + -1h(3 + h) = -3
-1 + 8h + (3 * -1h + h * -1h) = -3
-1 + 8h + (-3h + -1h2) = -3

Combine like terms: 8h + -3h = 5h
-1 + 5h + -1h2 = -3

Solving
-1 + 5h + -1h2 = -3

Solving for variable 'h'.

Reorder the terms:
-1 + 3 + 5h + -1h2 = -3 + 3

Combine like terms: -1 + 3 = 2
2 + 5h + -1h2 = -3 + 3

Combine like terms: -3 + 3 = 0
2 + 5h + -1h2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-2 + -5h + h2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -5h + 2 + h2 = 0 + 2

Reorder the terms:
-2 + 2 + -5h + h2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -5h + h2 = 0 + 2
-5h + h2 = 0 + 2

Combine like terms: 0 + 2 = 2
-5h + h2 = 2

The h term is -5h.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5h + 6.25 + h2 = 2 + 6.25

Reorder the terms:
6.25 + -5h + h2 = 2 + 6.25

Combine like terms: 2 + 6.25 = 8.25
6.25 + -5h + h2 = 8.25

Factor a perfect square on the left side:
(h + -2.5)(h + -2.5) = 8.25

Calculate the square root of the right side: 2.872281323

Break this problem into two subproblems by setting 
(h + -2.5) equal to 2.872281323 and -2.872281323.

Subproblem 1

h + -2.5 = 2.872281323 Simplifying h + -2.5 = 2.872281323 Reorder the terms: -2.5 + h = 2.872281323 Solving -2.5 + h = 2.872281323 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + h = 2.872281323 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + h = 2.872281323 + 2.5 h = 2.872281323 + 2.5 Combine like terms: 2.872281323 + 2.5 = 5.372281323 h = 5.372281323 Simplifying h = 5.372281323

Subproblem 2

h + -2.5 = -2.872281323 Simplifying h + -2.5 = -2.872281323 Reorder the terms: -2.5 + h = -2.872281323 Solving -2.5 + h = -2.872281323 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + h = -2.872281323 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + h = -2.872281323 + 2.5 h = -2.872281323 + 2.5 Combine like terms: -2.872281323 + 2.5 = -0.372281323 h = -0.372281323 Simplifying h = -0.372281323

Solution

The solution to the problem is based on the solutions from the subproblems. h = {5.372281323, -0.372281323}

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