x^2-.81x+.048=0

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Solution for x^2-.81x+.048=0 equation:


Simplifying
x2 + -0.81x + 0.048 = 0

Reorder the terms:
0.048 + -0.81x + x2 = 0

Solving
0.048 + -0.81x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-0.048' to each side of the equation.
0.048 + -0.81x + -0.048 + x2 = 0 + -0.048

Reorder the terms:
0.048 + -0.048 + -0.81x + x2 = 0 + -0.048

Combine like terms: 0.048 + -0.048 = 0.000
0.000 + -0.81x + x2 = 0 + -0.048
-0.81x + x2 = 0 + -0.048

Combine like terms: 0 + -0.048 = -0.048
-0.81x + x2 = -0.048

The x term is -0.81x.  Take half its coefficient (-0.405).
Square it (0.164025) and add it to both sides.

Add '0.164025' to each side of the equation.
-0.81x + 0.164025 + x2 = -0.048 + 0.164025

Reorder the terms:
0.164025 + -0.81x + x2 = -0.048 + 0.164025

Combine like terms: -0.048 + 0.164025 = 0.116025
0.164025 + -0.81x + x2 = 0.116025

Factor a perfect square on the left side:
(x + -0.405)(x + -0.405) = 0.116025

Calculate the square root of the right side: 0.340624427

Break this problem into two subproblems by setting 
(x + -0.405) equal to 0.340624427 and -0.340624427.

Subproblem 1

x + -0.405 = 0.340624427 Simplifying x + -0.405 = 0.340624427 Reorder the terms: -0.405 + x = 0.340624427 Solving -0.405 + x = 0.340624427 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.405' to each side of the equation. -0.405 + 0.405 + x = 0.340624427 + 0.405 Combine like terms: -0.405 + 0.405 = 0.000 0.000 + x = 0.340624427 + 0.405 x = 0.340624427 + 0.405 Combine like terms: 0.340624427 + 0.405 = 0.745624427 x = 0.745624427 Simplifying x = 0.745624427

Subproblem 2

x + -0.405 = -0.340624427 Simplifying x + -0.405 = -0.340624427 Reorder the terms: -0.405 + x = -0.340624427 Solving -0.405 + x = -0.340624427 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.405' to each side of the equation. -0.405 + 0.405 + x = -0.340624427 + 0.405 Combine like terms: -0.405 + 0.405 = 0.000 0.000 + x = -0.340624427 + 0.405 x = -0.340624427 + 0.405 Combine like terms: -0.340624427 + 0.405 = 0.064375573 x = 0.064375573 Simplifying x = 0.064375573

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.745624427, 0.064375573}

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