x=3x^2+2x-48

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Solution for x=3x^2+2x-48 equation:


Simplifying
x = 3x2 + 2x + -48

Reorder the terms:
x = -48 + 2x + 3x2

Solving
x = -48 + 2x + 3x2

Solving for variable 'x'.

Reorder the terms:
48 + x + -2x + -3x2 = -48 + 2x + 3x2 + 48 + -2x + -3x2

Combine like terms: x + -2x = -1x
48 + -1x + -3x2 = -48 + 2x + 3x2 + 48 + -2x + -3x2

Reorder the terms:
48 + -1x + -3x2 = -48 + 48 + 2x + -2x + 3x2 + -3x2

Combine like terms: -48 + 48 = 0
48 + -1x + -3x2 = 0 + 2x + -2x + 3x2 + -3x2
48 + -1x + -3x2 = 2x + -2x + 3x2 + -3x2

Combine like terms: 2x + -2x = 0
48 + -1x + -3x2 = 0 + 3x2 + -3x2
48 + -1x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
48 + -1x + -3x2 = 0

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

Divide each side by '-3'.
-16 + 0.3333333333x + x2 = 0

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + 0.3333333333x + 16 + x2 = 0 + 16

Reorder the terms:
-16 + 16 + 0.3333333333x + x2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 0.3333333333x + x2 = 0 + 16
0.3333333333x + x2 = 0 + 16

Combine like terms: 0 + 16 = 16
0.3333333333x + x2 = 16

The x term is 0.3333333333x.  Take half its coefficient (0.1666666667).
Square it (0.02777777779) and add it to both sides.

Add '0.02777777779' to each side of the equation.
0.3333333333x + 0.02777777779 + x2 = 16 + 0.02777777779

Reorder the terms:
0.02777777779 + 0.3333333333x + x2 = 16 + 0.02777777779

Combine like terms: 16 + 0.02777777779 = 16.02777777779
0.02777777779 + 0.3333333333x + x2 = 16.02777777779

Factor a perfect square on the left side:
(x + 0.1666666667)(x + 0.1666666667) = 16.02777777779

Calculate the square root of the right side: 4.003470716

Break this problem into two subproblems by setting 
(x + 0.1666666667) equal to 4.003470716 and -4.003470716.

Subproblem 1

x + 0.1666666667 = 4.003470716 Simplifying x + 0.1666666667 = 4.003470716 Reorder the terms: 0.1666666667 + x = 4.003470716 Solving 0.1666666667 + x = 4.003470716 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + x = 4.003470716 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + x = 4.003470716 + -0.1666666667 x = 4.003470716 + -0.1666666667 Combine like terms: 4.003470716 + -0.1666666667 = 3.8368040493 x = 3.8368040493 Simplifying x = 3.8368040493

Subproblem 2

x + 0.1666666667 = -4.003470716 Simplifying x + 0.1666666667 = -4.003470716 Reorder the terms: 0.1666666667 + x = -4.003470716 Solving 0.1666666667 + x = -4.003470716 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + x = -4.003470716 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + x = -4.003470716 + -0.1666666667 x = -4.003470716 + -0.1666666667 Combine like terms: -4.003470716 + -0.1666666667 = -4.1701373827 x = -4.1701373827 Simplifying x = -4.1701373827

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.8368040493, -4.1701373827}

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