25x^2-6x-4=0

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


Simplifying
25x2 + -6x + -4 = 0

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

Solving
-4 + -6x + 25x2 = 0

Solving for variable 'x'.

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

Divide each side by '25'.
-0.16 + -0.24x + x2 = 0

Move the constant term to the right:

Add '0.16' to each side of the equation.
-0.16 + -0.24x + 0.16 + x2 = 0 + 0.16

Reorder the terms:
-0.16 + 0.16 + -0.24x + x2 = 0 + 0.16

Combine like terms: -0.16 + 0.16 = 0.00
0.00 + -0.24x + x2 = 0 + 0.16
-0.24x + x2 = 0 + 0.16

Combine like terms: 0 + 0.16 = 0.16
-0.24x + x2 = 0.16

The x term is -0.24x.  Take half its coefficient (-0.12).
Square it (0.0144) and add it to both sides.

Add '0.0144' to each side of the equation.
-0.24x + 0.0144 + x2 = 0.16 + 0.0144

Reorder the terms:
0.0144 + -0.24x + x2 = 0.16 + 0.0144

Combine like terms: 0.16 + 0.0144 = 0.1744
0.0144 + -0.24x + x2 = 0.1744

Factor a perfect square on the left side:
(x + -0.12)(x + -0.12) = 0.1744

Calculate the square root of the right side: 0.41761226

Break this problem into two subproblems by setting 
(x + -0.12) equal to 0.41761226 and -0.41761226.

Subproblem 1

x + -0.12 = 0.41761226 Simplifying x + -0.12 = 0.41761226 Reorder the terms: -0.12 + x = 0.41761226 Solving -0.12 + x = 0.41761226 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.12' to each side of the equation. -0.12 + 0.12 + x = 0.41761226 + 0.12 Combine like terms: -0.12 + 0.12 = 0.00 0.00 + x = 0.41761226 + 0.12 x = 0.41761226 + 0.12 Combine like terms: 0.41761226 + 0.12 = 0.53761226 x = 0.53761226 Simplifying x = 0.53761226

Subproblem 2

x + -0.12 = -0.41761226 Simplifying x + -0.12 = -0.41761226 Reorder the terms: -0.12 + x = -0.41761226 Solving -0.12 + x = -0.41761226 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.12' to each side of the equation. -0.12 + 0.12 + x = -0.41761226 + 0.12 Combine like terms: -0.12 + 0.12 = 0.00 0.00 + x = -0.41761226 + 0.12 x = -0.41761226 + 0.12 Combine like terms: -0.41761226 + 0.12 = -0.29761226 x = -0.29761226 Simplifying x = -0.29761226

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.53761226, -0.29761226}

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