6.25x^2-35x+25=0

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Solution for 6.25x^2-35x+25=0 equation:


Simplifying
6.25x2 + -35x + 25 = 0

Reorder the terms:
25 + -35x + 6.25x2 = 0

Solving
25 + -35x + 6.25x2 = 0

Solving for variable 'x'.

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

Divide each side by '6.25'.
4 + -5.6x + x2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -5.6x + -4 + x2 = 0 + -4

Reorder the terms:
4 + -4 + -5.6x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -5.6x + x2 = 0 + -4
-5.6x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4
-5.6x + x2 = -4

The x term is -5.6x.  Take half its coefficient (-2.8).
Square it (7.84) and add it to both sides.

Add '7.84' to each side of the equation.
-5.6x + 7.84 + x2 = -4 + 7.84

Reorder the terms:
7.84 + -5.6x + x2 = -4 + 7.84

Combine like terms: -4 + 7.84 = 3.84
7.84 + -5.6x + x2 = 3.84

Factor a perfect square on the left side:
(x + -2.8)(x + -2.8) = 3.84

Calculate the square root of the right side: 1.959591794

Break this problem into two subproblems by setting 
(x + -2.8) equal to 1.959591794 and -1.959591794.

Subproblem 1

x + -2.8 = 1.959591794 Simplifying x + -2.8 = 1.959591794 Reorder the terms: -2.8 + x = 1.959591794 Solving -2.8 + x = 1.959591794 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.8' to each side of the equation. -2.8 + 2.8 + x = 1.959591794 + 2.8 Combine like terms: -2.8 + 2.8 = 0.0 0.0 + x = 1.959591794 + 2.8 x = 1.959591794 + 2.8 Combine like terms: 1.959591794 + 2.8 = 4.759591794 x = 4.759591794 Simplifying x = 4.759591794

Subproblem 2

x + -2.8 = -1.959591794 Simplifying x + -2.8 = -1.959591794 Reorder the terms: -2.8 + x = -1.959591794 Solving -2.8 + x = -1.959591794 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.8' to each side of the equation. -2.8 + 2.8 + x = -1.959591794 + 2.8 Combine like terms: -2.8 + 2.8 = 0.0 0.0 + x = -1.959591794 + 2.8 x = -1.959591794 + 2.8 Combine like terms: -1.959591794 + 2.8 = 0.840408206 x = 0.840408206 Simplifying x = 0.840408206

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.759591794, 0.840408206}

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