6x^2+28x+49=1936

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Solution for 6x^2+28x+49=1936 equation:


Simplifying
6x2 + 28x + 49 = 1936

Reorder the terms:
49 + 28x + 6x2 = 1936

Solving
49 + 28x + 6x2 = 1936

Solving for variable 'x'.

Reorder the terms:
49 + -1936 + 28x + 6x2 = 1936 + -1936

Combine like terms: 49 + -1936 = -1887
-1887 + 28x + 6x2 = 1936 + -1936

Combine like terms: 1936 + -1936 = 0
-1887 + 28x + 6x2 = 0

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

Divide each side by '6'.
-314.5 + 4.666666667x + x2 = 0

Move the constant term to the right:

Add '314.5' to each side of the equation.
-314.5 + 4.666666667x + 314.5 + x2 = 0 + 314.5

Reorder the terms:
-314.5 + 314.5 + 4.666666667x + x2 = 0 + 314.5

Combine like terms: -314.5 + 314.5 = 0.0
0.0 + 4.666666667x + x2 = 0 + 314.5
4.666666667x + x2 = 0 + 314.5

Combine like terms: 0 + 314.5 = 314.5
4.666666667x + x2 = 314.5

The x term is 4.666666667x.  Take half its coefficient (2.333333334).
Square it (5.444444448) and add it to both sides.

Add '5.444444448' to each side of the equation.
4.666666667x + 5.444444448 + x2 = 314.5 + 5.444444448

Reorder the terms:
5.444444448 + 4.666666667x + x2 = 314.5 + 5.444444448

Combine like terms: 314.5 + 5.444444448 = 319.944444448
5.444444448 + 4.666666667x + x2 = 319.944444448

Factor a perfect square on the left side:
(x + 2.333333334)(x + 2.333333334) = 319.944444448

Calculate the square root of the right side: 17.886990928

Break this problem into two subproblems by setting 
(x + 2.333333334) equal to 17.886990928 and -17.886990928.

Subproblem 1

x + 2.333333334 = 17.886990928 Simplifying x + 2.333333334 = 17.886990928 Reorder the terms: 2.333333334 + x = 17.886990928 Solving 2.333333334 + x = 17.886990928 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.333333334' to each side of the equation. 2.333333334 + -2.333333334 + x = 17.886990928 + -2.333333334 Combine like terms: 2.333333334 + -2.333333334 = 0.000000000 0.000000000 + x = 17.886990928 + -2.333333334 x = 17.886990928 + -2.333333334 Combine like terms: 17.886990928 + -2.333333334 = 15.553657594 x = 15.553657594 Simplifying x = 15.553657594

Subproblem 2

x + 2.333333334 = -17.886990928 Simplifying x + 2.333333334 = -17.886990928 Reorder the terms: 2.333333334 + x = -17.886990928 Solving 2.333333334 + x = -17.886990928 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.333333334' to each side of the equation. 2.333333334 + -2.333333334 + x = -17.886990928 + -2.333333334 Combine like terms: 2.333333334 + -2.333333334 = 0.000000000 0.000000000 + x = -17.886990928 + -2.333333334 x = -17.886990928 + -2.333333334 Combine like terms: -17.886990928 + -2.333333334 = -20.220324262 x = -20.220324262 Simplifying x = -20.220324262

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.553657594, -20.220324262}

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