25x^2-11x-25=0

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Solution for 25x^2-11x-25=0 equation:


Simplifying
25x2 + -11x + -25 = 0

Reorder the terms:
-25 + -11x + 25x2 = 0

Solving
-25 + -11x + 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'.
-1 + -0.44x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -0.44x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + -0.44x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -0.44x + x2 = 0 + 1
-0.44x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
-0.44x + x2 = 1

The x term is -0.44x.  Take half its coefficient (-0.22).
Square it (0.0484) and add it to both sides.

Add '0.0484' to each side of the equation.
-0.44x + 0.0484 + x2 = 1 + 0.0484

Reorder the terms:
0.0484 + -0.44x + x2 = 1 + 0.0484

Combine like terms: 1 + 0.0484 = 1.0484
0.0484 + -0.44x + x2 = 1.0484

Factor a perfect square on the left side:
(x + -0.22)(x + -0.22) = 1.0484

Calculate the square root of the right side: 1.023914059

Break this problem into two subproblems by setting 
(x + -0.22) equal to 1.023914059 and -1.023914059.

Subproblem 1

x + -0.22 = 1.023914059 Simplifying x + -0.22 = 1.023914059 Reorder the terms: -0.22 + x = 1.023914059 Solving -0.22 + x = 1.023914059 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.22' to each side of the equation. -0.22 + 0.22 + x = 1.023914059 + 0.22 Combine like terms: -0.22 + 0.22 = 0.00 0.00 + x = 1.023914059 + 0.22 x = 1.023914059 + 0.22 Combine like terms: 1.023914059 + 0.22 = 1.243914059 x = 1.243914059 Simplifying x = 1.243914059

Subproblem 2

x + -0.22 = -1.023914059 Simplifying x + -0.22 = -1.023914059 Reorder the terms: -0.22 + x = -1.023914059 Solving -0.22 + x = -1.023914059 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.22' to each side of the equation. -0.22 + 0.22 + x = -1.023914059 + 0.22 Combine like terms: -0.22 + 0.22 = 0.00 0.00 + x = -1.023914059 + 0.22 x = -1.023914059 + 0.22 Combine like terms: -1.023914059 + 0.22 = -0.803914059 x = -0.803914059 Simplifying x = -0.803914059

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.243914059, -0.803914059}

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