x^2-2.5x+0.5625=0

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Solution for x^2-2.5x+0.5625=0 equation:


Simplifying
x2 + -2.5x + 0.5625 = 0

Reorder the terms:
0.5625 + -2.5x + x2 = 0

Solving
0.5625 + -2.5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-0.5625' to each side of the equation.
0.5625 + -2.5x + -0.5625 + x2 = 0 + -0.5625

Reorder the terms:
0.5625 + -0.5625 + -2.5x + x2 = 0 + -0.5625

Combine like terms: 0.5625 + -0.5625 = 0.0000
0.0000 + -2.5x + x2 = 0 + -0.5625
-2.5x + x2 = 0 + -0.5625

Combine like terms: 0 + -0.5625 = -0.5625
-2.5x + x2 = -0.5625

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = -0.5625 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = -0.5625 + 1.5625

Combine like terms: -0.5625 + 1.5625 = 1
1.5625 + -2.5x + x2 = 1

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = 1

Calculate the square root of the right side: 1

Break this problem into two subproblems by setting 
(x + -1.25) equal to 1 and -1.

Subproblem 1

x + -1.25 = 1 Simplifying x + -1.25 = 1 Reorder the terms: -1.25 + x = 1 Solving -1.25 + x = 1 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = 1 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 1 + 1.25 x = 1 + 1.25 Combine like terms: 1 + 1.25 = 2.25 x = 2.25 Simplifying x = 2.25

Subproblem 2

x + -1.25 = -1 Simplifying x + -1.25 = -1 Reorder the terms: -1.25 + x = -1 Solving -1.25 + x = -1 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = -1 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -1 + 1.25 x = -1 + 1.25 Combine like terms: -1 + 1.25 = 0.25 x = 0.25 Simplifying x = 0.25

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.25, 0.25}

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