x^2-3.8x+3.61=0

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Solution for x^2-3.8x+3.61=0 equation:


Simplifying
x2 + -3.8x + 3.61 = 0

Reorder the terms:
3.61 + -3.8x + x2 = 0

Solving
3.61 + -3.8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-3.61' to each side of the equation.
3.61 + -3.8x + -3.61 + x2 = 0 + -3.61

Reorder the terms:
3.61 + -3.61 + -3.8x + x2 = 0 + -3.61

Combine like terms: 3.61 + -3.61 = 0.00
0.00 + -3.8x + x2 = 0 + -3.61
-3.8x + x2 = 0 + -3.61

Combine like terms: 0 + -3.61 = -3.61
-3.8x + x2 = -3.61

The x term is -3.8x.  Take half its coefficient (-1.9).
Square it (3.61) and add it to both sides.

Add '3.61' to each side of the equation.
-3.8x + 3.61 + x2 = -3.61 + 3.61

Reorder the terms:
3.61 + -3.8x + x2 = -3.61 + 3.61

Combine like terms: -3.61 + 3.61 = 0.00
3.61 + -3.8x + x2 = 0.00

Factor a perfect square on the left side:
(x + -1.9)(x + -1.9) = 0.00

Calculate the square root of the right side: 0.00

Break this problem into two subproblems by setting 
(x + -1.9) equal to 0.00 and 0.00.

Subproblem 1

x + -1.9 = 0.00 Simplifying x + -1.9 = 0.00 Reorder the terms: -1.9 + x = 0.00 Solving -1.9 + x = 0.00 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.9' to each side of the equation. -1.9 + 1.9 + x = 0.00 + 1.9 Combine like terms: -1.9 + 1.9 = 0.0 0.0 + x = 0.00 + 1.9 x = 0.00 + 1.9 Combine like terms: 0.00 + 1.9 = 1.9 x = 1.9 Simplifying x = 1.9

Subproblem 2

x + -1.9 = 0.00 Simplifying x + -1.9 = 0.00 Reorder the terms: -1.9 + x = 0.00 Solving -1.9 + x = 0.00 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.9' to each side of the equation. -1.9 + 1.9 + x = 0.00 + 1.9 Combine like terms: -1.9 + 1.9 = 0.0 0.0 + x = 0.00 + 1.9 x = 0.00 + 1.9 Combine like terms: 0.00 + 1.9 = 1.9 x = 1.9 Simplifying x = 1.9

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.9, 1.9}

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