4x^2+12x-49=0

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Solution for 4x^2+12x-49=0 equation:


Simplifying
4x2 + 12x + -49 = 0

Reorder the terms:
-49 + 12x + 4x2 = 0

Solving
-49 + 12x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
-12.25 + 3x + x2 = 0

Move the constant term to the right:

Add '12.25' to each side of the equation.
-12.25 + 3x + 12.25 + x2 = 0 + 12.25

Reorder the terms:
-12.25 + 12.25 + 3x + x2 = 0 + 12.25

Combine like terms: -12.25 + 12.25 = 0.00
0.00 + 3x + x2 = 0 + 12.25
3x + x2 = 0 + 12.25

Combine like terms: 0 + 12.25 = 12.25
3x + x2 = 12.25

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 12.25 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 12.25 + 2.25

Combine like terms: 12.25 + 2.25 = 14.5
2.25 + 3x + x2 = 14.5

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 14.5

Calculate the square root of the right side: 3.807886553

Break this problem into two subproblems by setting 
(x + 1.5) equal to 3.807886553 and -3.807886553.

Subproblem 1

x + 1.5 = 3.807886553 Simplifying x + 1.5 = 3.807886553 Reorder the terms: 1.5 + x = 3.807886553 Solving 1.5 + x = 3.807886553 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 3.807886553 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 3.807886553 + -1.5 x = 3.807886553 + -1.5 Combine like terms: 3.807886553 + -1.5 = 2.307886553 x = 2.307886553 Simplifying x = 2.307886553

Subproblem 2

x + 1.5 = -3.807886553 Simplifying x + 1.5 = -3.807886553 Reorder the terms: 1.5 + x = -3.807886553 Solving 1.5 + x = -3.807886553 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -3.807886553 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -3.807886553 + -1.5 x = -3.807886553 + -1.5 Combine like terms: -3.807886553 + -1.5 = -5.307886553 x = -5.307886553 Simplifying x = -5.307886553

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.307886553, -5.307886553}

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