x^2-1.25x+.375=0

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Solution for x^2-1.25x+.375=0 equation:


Simplifying
x2 + -1.25x + 0.375 = 0

Reorder the terms:
0.375 + -1.25x + x2 = 0

Solving
0.375 + -1.25x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-0.375' to each side of the equation.
0.375 + -1.25x + -0.375 + x2 = 0 + -0.375

Reorder the terms:
0.375 + -0.375 + -1.25x + x2 = 0 + -0.375

Combine like terms: 0.375 + -0.375 = 0.000
0.000 + -1.25x + x2 = 0 + -0.375
-1.25x + x2 = 0 + -0.375

Combine like terms: 0 + -0.375 = -0.375
-1.25x + x2 = -0.375

The x term is -1.25x.  Take half its coefficient (-0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
-1.25x + 0.390625 + x2 = -0.375 + 0.390625

Reorder the terms:
0.390625 + -1.25x + x2 = -0.375 + 0.390625

Combine like terms: -0.375 + 0.390625 = 0.015625
0.390625 + -1.25x + x2 = 0.015625

Factor a perfect square on the left side:
(x + -0.625)(x + -0.625) = 0.015625

Calculate the square root of the right side: 0.125

Break this problem into two subproblems by setting 
(x + -0.625) equal to 0.125 and -0.125.

Subproblem 1

x + -0.625 = 0.125 Simplifying x + -0.625 = 0.125 Reorder the terms: -0.625 + x = 0.125 Solving -0.625 + x = 0.125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + x = 0.125 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + x = 0.125 + 0.625 x = 0.125 + 0.625 Combine like terms: 0.125 + 0.625 = 0.75 x = 0.75 Simplifying x = 0.75

Subproblem 2

x + -0.625 = -0.125 Simplifying x + -0.625 = -0.125 Reorder the terms: -0.625 + x = -0.125 Solving -0.625 + x = -0.125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + x = -0.125 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + x = -0.125 + 0.625 x = -0.125 + 0.625 Combine like terms: -0.125 + 0.625 = 0.5 x = 0.5 Simplifying x = 0.5

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.75, 0.5}

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