3x^2+3x-224=0

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Solution for 3x^2+3x-224=0 equation:


Simplifying
3x2 + 3x + -224 = 0

Reorder the terms:
-224 + 3x + 3x2 = 0

Solving
-224 + 3x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-74.66666667 + x + x2 = 0

Move the constant term to the right:

Add '74.66666667' to each side of the equation.
-74.66666667 + x + 74.66666667 + x2 = 0 + 74.66666667

Reorder the terms:
-74.66666667 + 74.66666667 + x + x2 = 0 + 74.66666667

Combine like terms: -74.66666667 + 74.66666667 = 0.00000000
0.00000000 + x + x2 = 0 + 74.66666667
x + x2 = 0 + 74.66666667

Combine like terms: 0 + 74.66666667 = 74.66666667
x + x2 = 74.66666667

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 74.66666667 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 74.66666667 + 0.25

Combine like terms: 74.66666667 + 0.25 = 74.91666667
1.25 + x2 = 74.91666667

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 74.91666667

Calculate the square root of the right side: 8.655441449

Break this problem into two subproblems by setting 
(x + 0.5) equal to 8.655441449 and -8.655441449.

Subproblem 1

x + 0.5 = 8.655441449 Simplifying x + 0.5 = 8.655441449 Reorder the terms: 0.5 + x = 8.655441449 Solving 0.5 + x = 8.655441449 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 8.655441449 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 8.655441449 + -0.5 x = 8.655441449 + -0.5 Combine like terms: 8.655441449 + -0.5 = 8.155441449 x = 8.155441449 Simplifying x = 8.155441449

Subproblem 2

x + 0.5 = -8.655441449 Simplifying x + 0.5 = -8.655441449 Reorder the terms: 0.5 + x = -8.655441449 Solving 0.5 + x = -8.655441449 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -8.655441449 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -8.655441449 + -0.5 x = -8.655441449 + -0.5 Combine like terms: -8.655441449 + -0.5 = -9.155441449 x = -9.155441449 Simplifying x = -9.155441449

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.155441449, -9.155441449}

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