3x^2=144+x

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Solution for 3x^2=144+x equation:


Simplifying
3x2 = 144 + x

Solving
3x2 = 144 + x

Solving for variable 'x'.

Reorder the terms:
-144 + -1x + 3x2 = 144 + x + -144 + -1x

Reorder the terms:
-144 + -1x + 3x2 = 144 + -144 + x + -1x

Combine like terms: 144 + -144 = 0
-144 + -1x + 3x2 = 0 + x + -1x
-144 + -1x + 3x2 = x + -1x

Combine like terms: x + -1x = 0
-144 + -1x + 3x2 = 0

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

Divide each side by '3'.
-48 + -0.3333333333x + x2 = 0

Move the constant term to the right:

Add '48' to each side of the equation.
-48 + -0.3333333333x + 48 + x2 = 0 + 48

Reorder the terms:
-48 + 48 + -0.3333333333x + x2 = 0 + 48

Combine like terms: -48 + 48 = 0
0 + -0.3333333333x + x2 = 0 + 48
-0.3333333333x + x2 = 0 + 48

Combine like terms: 0 + 48 = 48
-0.3333333333x + x2 = 48

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 = 48 + 0.02777777779

Reorder the terms:
0.02777777779 + -0.3333333333x + x2 = 48 + 0.02777777779

Combine like terms: 48 + 0.02777777779 = 48.02777777779
0.02777777779 + -0.3333333333x + x2 = 48.02777777779

Factor a perfect square on the left side:
(x + -0.1666666667)(x + -0.1666666667) = 48.02777777779

Calculate the square root of the right side: 6.930207629

Break this problem into two subproblems by setting 
(x + -0.1666666667) equal to 6.930207629 and -6.930207629.

Subproblem 1

x + -0.1666666667 = 6.930207629 Simplifying x + -0.1666666667 = 6.930207629 Reorder the terms: -0.1666666667 + x = 6.930207629 Solving -0.1666666667 + x = 6.930207629 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 = 6.930207629 + 0.1666666667 Combine like terms: -0.1666666667 + 0.1666666667 = 0.0000000000 0.0000000000 + x = 6.930207629 + 0.1666666667 x = 6.930207629 + 0.1666666667 Combine like terms: 6.930207629 + 0.1666666667 = 7.0968742957 x = 7.0968742957 Simplifying x = 7.0968742957

Subproblem 2

x + -0.1666666667 = -6.930207629 Simplifying x + -0.1666666667 = -6.930207629 Reorder the terms: -0.1666666667 + x = -6.930207629 Solving -0.1666666667 + x = -6.930207629 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 = -6.930207629 + 0.1666666667 Combine like terms: -0.1666666667 + 0.1666666667 = 0.0000000000 0.0000000000 + x = -6.930207629 + 0.1666666667 x = -6.930207629 + 0.1666666667 Combine like terms: -6.930207629 + 0.1666666667 = -6.7635409623 x = -6.7635409623 Simplifying x = -6.7635409623

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.0968742957, -6.7635409623}

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