5x^2+25x-6=0

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Solution for 5x^2+25x-6=0 equation:


Simplifying
5x2 + 25x + -6 = 0

Reorder the terms:
-6 + 25x + 5x2 = 0

Solving
-6 + 25x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-1.2 + 5x + x2 = 0

Move the constant term to the right:

Add '1.2' to each side of the equation.
-1.2 + 5x + 1.2 + x2 = 0 + 1.2

Reorder the terms:
-1.2 + 1.2 + 5x + x2 = 0 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + 5x + x2 = 0 + 1.2
5x + x2 = 0 + 1.2

Combine like terms: 0 + 1.2 = 1.2
5x + x2 = 1.2

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = 1.2 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 1.2 + 6.25

Combine like terms: 1.2 + 6.25 = 7.45
6.25 + 5x + x2 = 7.45

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 7.45

Calculate the square root of the right side: 2.729468813

Break this problem into two subproblems by setting 
(x + 2.5) equal to 2.729468813 and -2.729468813.

Subproblem 1

x + 2.5 = 2.729468813 Simplifying x + 2.5 = 2.729468813 Reorder the terms: 2.5 + x = 2.729468813 Solving 2.5 + x = 2.729468813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 2.729468813 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 2.729468813 + -2.5 x = 2.729468813 + -2.5 Combine like terms: 2.729468813 + -2.5 = 0.229468813 x = 0.229468813 Simplifying x = 0.229468813

Subproblem 2

x + 2.5 = -2.729468813 Simplifying x + 2.5 = -2.729468813 Reorder the terms: 2.5 + x = -2.729468813 Solving 2.5 + x = -2.729468813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -2.729468813 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -2.729468813 + -2.5 x = -2.729468813 + -2.5 Combine like terms: -2.729468813 + -2.5 = -5.229468813 x = -5.229468813 Simplifying x = -5.229468813

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.229468813, -5.229468813}

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