6x^2+25x-4=0

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Solution for 6x^2+25x-4=0 equation:


Simplifying
6x2 + 25x + -4 = 0

Reorder the terms:
-4 + 25x + 6x2 = 0

Solving
-4 + 25x + 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'.
-0.6666666667 + 4.166666667x + x2 = 0

Move the constant term to the right:

Add '0.6666666667' to each side of the equation.
-0.6666666667 + 4.166666667x + 0.6666666667 + x2 = 0 + 0.6666666667

Reorder the terms:
-0.6666666667 + 0.6666666667 + 4.166666667x + x2 = 0 + 0.6666666667

Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000
0.0000000000 + 4.166666667x + x2 = 0 + 0.6666666667
4.166666667x + x2 = 0 + 0.6666666667

Combine like terms: 0 + 0.6666666667 = 0.6666666667
4.166666667x + x2 = 0.6666666667

The x term is 4.166666667x.  Take half its coefficient (2.083333334).
Square it (4.340277781) and add it to both sides.

Add '4.340277781' to each side of the equation.
4.166666667x + 4.340277781 + x2 = 0.6666666667 + 4.340277781

Reorder the terms:
4.340277781 + 4.166666667x + x2 = 0.6666666667 + 4.340277781

Combine like terms: 0.6666666667 + 4.340277781 = 5.0069444477
4.340277781 + 4.166666667x + x2 = 5.0069444477

Factor a perfect square on the left side:
(x + 2.083333334)(x + 2.083333334) = 5.0069444477

Calculate the square root of the right side: 2.237620264

Break this problem into two subproblems by setting 
(x + 2.083333334) equal to 2.237620264 and -2.237620264.

Subproblem 1

x + 2.083333334 = 2.237620264 Simplifying x + 2.083333334 = 2.237620264 Reorder the terms: 2.083333334 + x = 2.237620264 Solving 2.083333334 + x = 2.237620264 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.083333334' to each side of the equation. 2.083333334 + -2.083333334 + x = 2.237620264 + -2.083333334 Combine like terms: 2.083333334 + -2.083333334 = 0.000000000 0.000000000 + x = 2.237620264 + -2.083333334 x = 2.237620264 + -2.083333334 Combine like terms: 2.237620264 + -2.083333334 = 0.15428693 x = 0.15428693 Simplifying x = 0.15428693

Subproblem 2

x + 2.083333334 = -2.237620264 Simplifying x + 2.083333334 = -2.237620264 Reorder the terms: 2.083333334 + x = -2.237620264 Solving 2.083333334 + x = -2.237620264 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.083333334' to each side of the equation. 2.083333334 + -2.083333334 + x = -2.237620264 + -2.083333334 Combine like terms: 2.083333334 + -2.083333334 = 0.000000000 0.000000000 + x = -2.237620264 + -2.083333334 x = -2.237620264 + -2.083333334 Combine like terms: -2.237620264 + -2.083333334 = -4.320953598 x = -4.320953598 Simplifying x = -4.320953598

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.15428693, -4.320953598}

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