3h(h+5)+4(2h-3)=

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Solution for 3h(h+5)+4(2h-3)= equation:


Simplifying
3h(h + 5) + 4(2h + -3) = 0

Reorder the terms:
3h(5 + h) + 4(2h + -3) = 0
(5 * 3h + h * 3h) + 4(2h + -3) = 0
(15h + 3h2) + 4(2h + -3) = 0

Reorder the terms:
15h + 3h2 + 4(-3 + 2h) = 0
15h + 3h2 + (-3 * 4 + 2h * 4) = 0
15h + 3h2 + (-12 + 8h) = 0

Reorder the terms:
-12 + 15h + 8h + 3h2 = 0

Combine like terms: 15h + 8h = 23h
-12 + 23h + 3h2 = 0

Solving
-12 + 23h + 3h2 = 0

Solving for variable 'h'.

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

Divide each side by '3'.
-4 + 7.666666667h + h2 = 0

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + 7.666666667h + 4 + h2 = 0 + 4

Reorder the terms:
-4 + 4 + 7.666666667h + h2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 7.666666667h + h2 = 0 + 4
7.666666667h + h2 = 0 + 4

Combine like terms: 0 + 4 = 4
7.666666667h + h2 = 4

The h term is 7.666666667h.  Take half its coefficient (3.833333334).
Square it (14.69444445) and add it to both sides.

Add '14.69444445' to each side of the equation.
7.666666667h + 14.69444445 + h2 = 4 + 14.69444445

Reorder the terms:
14.69444445 + 7.666666667h + h2 = 4 + 14.69444445

Combine like terms: 4 + 14.69444445 = 18.69444445
14.69444445 + 7.666666667h + h2 = 18.69444445

Factor a perfect square on the left side:
(h + 3.833333334)(h + 3.833333334) = 18.69444445

Calculate the square root of the right side: 4.323707258

Break this problem into two subproblems by setting 
(h + 3.833333334) equal to 4.323707258 and -4.323707258.

Subproblem 1

h + 3.833333334 = 4.323707258 Simplifying h + 3.833333334 = 4.323707258 Reorder the terms: 3.833333334 + h = 4.323707258 Solving 3.833333334 + h = 4.323707258 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '-3.833333334' to each side of the equation. 3.833333334 + -3.833333334 + h = 4.323707258 + -3.833333334 Combine like terms: 3.833333334 + -3.833333334 = 0.000000000 0.000000000 + h = 4.323707258 + -3.833333334 h = 4.323707258 + -3.833333334 Combine like terms: 4.323707258 + -3.833333334 = 0.490373924 h = 0.490373924 Simplifying h = 0.490373924

Subproblem 2

h + 3.833333334 = -4.323707258 Simplifying h + 3.833333334 = -4.323707258 Reorder the terms: 3.833333334 + h = -4.323707258 Solving 3.833333334 + h = -4.323707258 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '-3.833333334' to each side of the equation. 3.833333334 + -3.833333334 + h = -4.323707258 + -3.833333334 Combine like terms: 3.833333334 + -3.833333334 = 0.000000000 0.000000000 + h = -4.323707258 + -3.833333334 h = -4.323707258 + -3.833333334 Combine like terms: -4.323707258 + -3.833333334 = -8.157040592 h = -8.157040592 Simplifying h = -8.157040592

Solution

The solution to the problem is based on the solutions from the subproblems. h = {0.490373924, -8.157040592}

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