3x^2+6x-143=0

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Solution for 3x^2+6x-143=0 equation:


Simplifying
3x2 + 6x + -143 = 0

Reorder the terms:
-143 + 6x + 3x2 = 0

Solving
-143 + 6x + 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'.
-47.66666667 + 2x + x2 = 0

Move the constant term to the right:

Add '47.66666667' to each side of the equation.
-47.66666667 + 2x + 47.66666667 + x2 = 0 + 47.66666667

Reorder the terms:
-47.66666667 + 47.66666667 + 2x + x2 = 0 + 47.66666667

Combine like terms: -47.66666667 + 47.66666667 = 0.00000000
0.00000000 + 2x + x2 = 0 + 47.66666667
2x + x2 = 0 + 47.66666667

Combine like terms: 0 + 47.66666667 = 47.66666667
2x + x2 = 47.66666667

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 47.66666667 + 1

Reorder the terms:
1 + 2x + x2 = 47.66666667 + 1

Combine like terms: 47.66666667 + 1 = 48.66666667
1 + 2x + x2 = 48.66666667

Factor a perfect square on the left side:
(x + 1)(x + 1) = 48.66666667

Calculate the square root of the right side: 6.976149846

Break this problem into two subproblems by setting 
(x + 1) equal to 6.976149846 and -6.976149846.

Subproblem 1

x + 1 = 6.976149846 Simplifying x + 1 = 6.976149846 Reorder the terms: 1 + x = 6.976149846 Solving 1 + x = 6.976149846 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 6.976149846 + -1 Combine like terms: 1 + -1 = 0 0 + x = 6.976149846 + -1 x = 6.976149846 + -1 Combine like terms: 6.976149846 + -1 = 5.976149846 x = 5.976149846 Simplifying x = 5.976149846

Subproblem 2

x + 1 = -6.976149846 Simplifying x + 1 = -6.976149846 Reorder the terms: 1 + x = -6.976149846 Solving 1 + x = -6.976149846 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -6.976149846 + -1 Combine like terms: 1 + -1 = 0 0 + x = -6.976149846 + -1 x = -6.976149846 + -1 Combine like terms: -6.976149846 + -1 = -7.976149846 x = -7.976149846 Simplifying x = -7.976149846

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.976149846, -7.976149846}

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