2h^2-3h-18=

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Solution for 2h^2-3h-18= equation:


Simplifying
2h2 + -3h + -18 = 0

Reorder the terms:
-18 + -3h + 2h2 = 0

Solving
-18 + -3h + 2h2 = 0

Solving for variable 'h'.

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

Divide each side by '2'.
-9 + -1.5h + h2 = 0

Move the constant term to the right:

Add '9' to each side of the equation.
-9 + -1.5h + 9 + h2 = 0 + 9

Reorder the terms:
-9 + 9 + -1.5h + h2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -1.5h + h2 = 0 + 9
-1.5h + h2 = 0 + 9

Combine like terms: 0 + 9 = 9
-1.5h + h2 = 9

The h term is -1.5h.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5h + 0.5625 + h2 = 9 + 0.5625

Reorder the terms:
0.5625 + -1.5h + h2 = 9 + 0.5625

Combine like terms: 9 + 0.5625 = 9.5625
0.5625 + -1.5h + h2 = 9.5625

Factor a perfect square on the left side:
(h + -0.75)(h + -0.75) = 9.5625

Calculate the square root of the right side: 3.092329219

Break this problem into two subproblems by setting 
(h + -0.75) equal to 3.092329219 and -3.092329219.

Subproblem 1

h + -0.75 = 3.092329219 Simplifying h + -0.75 = 3.092329219 Reorder the terms: -0.75 + h = 3.092329219 Solving -0.75 + h = 3.092329219 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + h = 3.092329219 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + h = 3.092329219 + 0.75 h = 3.092329219 + 0.75 Combine like terms: 3.092329219 + 0.75 = 3.842329219 h = 3.842329219 Simplifying h = 3.842329219

Subproblem 2

h + -0.75 = -3.092329219 Simplifying h + -0.75 = -3.092329219 Reorder the terms: -0.75 + h = -3.092329219 Solving -0.75 + h = -3.092329219 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + h = -3.092329219 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + h = -3.092329219 + 0.75 h = -3.092329219 + 0.75 Combine like terms: -3.092329219 + 0.75 = -2.342329219 h = -2.342329219 Simplifying h = -2.342329219

Solution

The solution to the problem is based on the solutions from the subproblems. h = {3.842329219, -2.342329219}

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