3x+6=4x^2+24x-124

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Solution for 3x+6=4x^2+24x-124 equation:


Simplifying
3x + 6 = 4x2 + 24x + -124

Reorder the terms:
6 + 3x = 4x2 + 24x + -124

Reorder the terms:
6 + 3x = -124 + 24x + 4x2

Solving
6 + 3x = -124 + 24x + 4x2

Solving for variable 'x'.

Reorder the terms:
6 + 124 + 3x + -24x + -4x2 = -124 + 24x + 4x2 + 124 + -24x + -4x2

Combine like terms: 6 + 124 = 130
130 + 3x + -24x + -4x2 = -124 + 24x + 4x2 + 124 + -24x + -4x2

Combine like terms: 3x + -24x = -21x
130 + -21x + -4x2 = -124 + 24x + 4x2 + 124 + -24x + -4x2

Reorder the terms:
130 + -21x + -4x2 = -124 + 124 + 24x + -24x + 4x2 + -4x2

Combine like terms: -124 + 124 = 0
130 + -21x + -4x2 = 0 + 24x + -24x + 4x2 + -4x2
130 + -21x + -4x2 = 24x + -24x + 4x2 + -4x2

Combine like terms: 24x + -24x = 0
130 + -21x + -4x2 = 0 + 4x2 + -4x2
130 + -21x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
130 + -21x + -4x2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-32.5 + 5.25x + x2 = 0

Move the constant term to the right:

Add '32.5' to each side of the equation.
-32.5 + 5.25x + 32.5 + x2 = 0 + 32.5

Reorder the terms:
-32.5 + 32.5 + 5.25x + x2 = 0 + 32.5

Combine like terms: -32.5 + 32.5 = 0.0
0.0 + 5.25x + x2 = 0 + 32.5
5.25x + x2 = 0 + 32.5

Combine like terms: 0 + 32.5 = 32.5
5.25x + x2 = 32.5

The x term is 5.25x.  Take half its coefficient (2.625).
Square it (6.890625) and add it to both sides.

Add '6.890625' to each side of the equation.
5.25x + 6.890625 + x2 = 32.5 + 6.890625

Reorder the terms:
6.890625 + 5.25x + x2 = 32.5 + 6.890625

Combine like terms: 32.5 + 6.890625 = 39.390625
6.890625 + 5.25x + x2 = 39.390625

Factor a perfect square on the left side:
(x + 2.625)(x + 2.625) = 39.390625

Calculate the square root of the right side: 6.276195105

Break this problem into two subproblems by setting 
(x + 2.625) equal to 6.276195105 and -6.276195105.

Subproblem 1

x + 2.625 = 6.276195105 Simplifying x + 2.625 = 6.276195105 Reorder the terms: 2.625 + x = 6.276195105 Solving 2.625 + x = 6.276195105 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.625' to each side of the equation. 2.625 + -2.625 + x = 6.276195105 + -2.625 Combine like terms: 2.625 + -2.625 = 0.000 0.000 + x = 6.276195105 + -2.625 x = 6.276195105 + -2.625 Combine like terms: 6.276195105 + -2.625 = 3.651195105 x = 3.651195105 Simplifying x = 3.651195105

Subproblem 2

x + 2.625 = -6.276195105 Simplifying x + 2.625 = -6.276195105 Reorder the terms: 2.625 + x = -6.276195105 Solving 2.625 + x = -6.276195105 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.625' to each side of the equation. 2.625 + -2.625 + x = -6.276195105 + -2.625 Combine like terms: 2.625 + -2.625 = 0.000 0.000 + x = -6.276195105 + -2.625 x = -6.276195105 + -2.625 Combine like terms: -6.276195105 + -2.625 = -8.901195105 x = -8.901195105 Simplifying x = -8.901195105

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.651195105, -8.901195105}

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