25x^2-254x+247=0

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Solution for 25x^2-254x+247=0 equation:


Simplifying
25x2 + -254x + 247 = 0

Reorder the terms:
247 + -254x + 25x2 = 0

Solving
247 + -254x + 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'.
9.88 + -10.16x + x2 = 0

Move the constant term to the right:

Add '-9.88' to each side of the equation.
9.88 + -10.16x + -9.88 + x2 = 0 + -9.88

Reorder the terms:
9.88 + -9.88 + -10.16x + x2 = 0 + -9.88

Combine like terms: 9.88 + -9.88 = 0.00
0.00 + -10.16x + x2 = 0 + -9.88
-10.16x + x2 = 0 + -9.88

Combine like terms: 0 + -9.88 = -9.88
-10.16x + x2 = -9.88

The x term is -10.16x.  Take half its coefficient (-5.08).
Square it (25.8064) and add it to both sides.

Add '25.8064' to each side of the equation.
-10.16x + 25.8064 + x2 = -9.88 + 25.8064

Reorder the terms:
25.8064 + -10.16x + x2 = -9.88 + 25.8064

Combine like terms: -9.88 + 25.8064 = 15.9264
25.8064 + -10.16x + x2 = 15.9264

Factor a perfect square on the left side:
(x + -5.08)(x + -5.08) = 15.9264

Calculate the square root of the right side: 3.990789396

Break this problem into two subproblems by setting 
(x + -5.08) equal to 3.990789396 and -3.990789396.

Subproblem 1

x + -5.08 = 3.990789396 Simplifying x + -5.08 = 3.990789396 Reorder the terms: -5.08 + x = 3.990789396 Solving -5.08 + x = 3.990789396 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.08' to each side of the equation. -5.08 + 5.08 + x = 3.990789396 + 5.08 Combine like terms: -5.08 + 5.08 = 0.00 0.00 + x = 3.990789396 + 5.08 x = 3.990789396 + 5.08 Combine like terms: 3.990789396 + 5.08 = 9.070789396 x = 9.070789396 Simplifying x = 9.070789396

Subproblem 2

x + -5.08 = -3.990789396 Simplifying x + -5.08 = -3.990789396 Reorder the terms: -5.08 + x = -3.990789396 Solving -5.08 + x = -3.990789396 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.08' to each side of the equation. -5.08 + 5.08 + x = -3.990789396 + 5.08 Combine like terms: -5.08 + 5.08 = 0.00 0.00 + x = -3.990789396 + 5.08 x = -3.990789396 + 5.08 Combine like terms: -3.990789396 + 5.08 = 1.089210604 x = 1.089210604 Simplifying x = 1.089210604

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.070789396, 1.089210604}

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