x^2-2.5x+0.16=0

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Solution for x^2-2.5x+0.16=0 equation:


Simplifying
x2 + -2.5x + 0.16 = 0

Reorder the terms:
0.16 + -2.5x + x2 = 0

Solving
0.16 + -2.5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-0.16' to each side of the equation.
0.16 + -2.5x + -0.16 + x2 = 0 + -0.16

Reorder the terms:
0.16 + -0.16 + -2.5x + x2 = 0 + -0.16

Combine like terms: 0.16 + -0.16 = 0.00
0.00 + -2.5x + x2 = 0 + -0.16
-2.5x + x2 = 0 + -0.16

Combine like terms: 0 + -0.16 = -0.16
-2.5x + x2 = -0.16

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 = -0.16 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = -0.16 + 1.5625

Combine like terms: -0.16 + 1.5625 = 1.4025
1.5625 + -2.5x + x2 = 1.4025

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = 1.4025

Calculate the square root of the right side: 1.184271928

Break this problem into two subproblems by setting 
(x + -1.25) equal to 1.184271928 and -1.184271928.

Subproblem 1

x + -1.25 = 1.184271928 Simplifying x + -1.25 = 1.184271928 Reorder the terms: -1.25 + x = 1.184271928 Solving -1.25 + x = 1.184271928 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 = 1.184271928 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 1.184271928 + 1.25 x = 1.184271928 + 1.25 Combine like terms: 1.184271928 + 1.25 = 2.434271928 x = 2.434271928 Simplifying x = 2.434271928

Subproblem 2

x + -1.25 = -1.184271928 Simplifying x + -1.25 = -1.184271928 Reorder the terms: -1.25 + x = -1.184271928 Solving -1.25 + x = -1.184271928 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 = -1.184271928 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -1.184271928 + 1.25 x = -1.184271928 + 1.25 Combine like terms: -1.184271928 + 1.25 = 0.065728072 x = 0.065728072 Simplifying x = 0.065728072

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.434271928, 0.065728072}

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