6x^2+49x-381=0

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Solution for 6x^2+49x-381=0 equation:


Simplifying
6x2 + 49x + -381 = 0

Reorder the terms:
-381 + 49x + 6x2 = 0

Solving
-381 + 49x + 6x2 = 0

Solving for variable 'x'.

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

Divide each side by '6'.
-63.5 + 8.166666667x + x2 = 0

Move the constant term to the right:

Add '63.5' to each side of the equation.
-63.5 + 8.166666667x + 63.5 + x2 = 0 + 63.5

Reorder the terms:
-63.5 + 63.5 + 8.166666667x + x2 = 0 + 63.5

Combine like terms: -63.5 + 63.5 = 0.0
0.0 + 8.166666667x + x2 = 0 + 63.5
8.166666667x + x2 = 0 + 63.5

Combine like terms: 0 + 63.5 = 63.5
8.166666667x + x2 = 63.5

The x term is 8.166666667x.  Take half its coefficient (4.083333334).
Square it (16.67361112) and add it to both sides.

Add '16.67361112' to each side of the equation.
8.166666667x + 16.67361112 + x2 = 63.5 + 16.67361112

Reorder the terms:
16.67361112 + 8.166666667x + x2 = 63.5 + 16.67361112

Combine like terms: 63.5 + 16.67361112 = 80.17361112
16.67361112 + 8.166666667x + x2 = 80.17361112

Factor a perfect square on the left side:
(x + 4.083333334)(x + 4.083333334) = 80.17361112

Calculate the square root of the right side: 8.953971807

Break this problem into two subproblems by setting 
(x + 4.083333334) equal to 8.953971807 and -8.953971807.

Subproblem 1

x + 4.083333334 = 8.953971807 Simplifying x + 4.083333334 = 8.953971807 Reorder the terms: 4.083333334 + x = 8.953971807 Solving 4.083333334 + x = 8.953971807 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.083333334' to each side of the equation. 4.083333334 + -4.083333334 + x = 8.953971807 + -4.083333334 Combine like terms: 4.083333334 + -4.083333334 = 0.000000000 0.000000000 + x = 8.953971807 + -4.083333334 x = 8.953971807 + -4.083333334 Combine like terms: 8.953971807 + -4.083333334 = 4.870638473 x = 4.870638473 Simplifying x = 4.870638473

Subproblem 2

x + 4.083333334 = -8.953971807 Simplifying x + 4.083333334 = -8.953971807 Reorder the terms: 4.083333334 + x = -8.953971807 Solving 4.083333334 + x = -8.953971807 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.083333334' to each side of the equation. 4.083333334 + -4.083333334 + x = -8.953971807 + -4.083333334 Combine like terms: 4.083333334 + -4.083333334 = 0.000000000 0.000000000 + x = -8.953971807 + -4.083333334 x = -8.953971807 + -4.083333334 Combine like terms: -8.953971807 + -4.083333334 = -13.037305141 x = -13.037305141 Simplifying x = -13.037305141

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.870638473, -13.037305141}

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