x^2-5*x+2.7=0

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Solution for x^2-5*x+2.7=0 equation:


Simplifying
x2 + -5x + 2.7 = 0

Reorder the terms:
2.7 + -5x + x2 = 0

Solving
2.7 + -5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-2.7' to each side of the equation.
2.7 + -5x + -2.7 + x2 = 0 + -2.7

Reorder the terms:
2.7 + -2.7 + -5x + x2 = 0 + -2.7

Combine like terms: 2.7 + -2.7 = 0.0
0.0 + -5x + x2 = 0 + -2.7
-5x + x2 = 0 + -2.7

Combine like terms: 0 + -2.7 = -2.7
-5x + x2 = -2.7

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = -2.7 + 6.25

Reorder the terms:
6.25 + -5x + x2 = -2.7 + 6.25

Combine like terms: -2.7 + 6.25 = 3.55
6.25 + -5x + x2 = 3.55

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 3.55

Calculate the square root of the right side: 1.884144368

Break this problem into two subproblems by setting 
(x + -2.5) equal to 1.884144368 and -1.884144368.

Subproblem 1

x + -2.5 = 1.884144368 Simplifying x + -2.5 = 1.884144368 Reorder the terms: -2.5 + x = 1.884144368 Solving -2.5 + x = 1.884144368 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 1.884144368 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 1.884144368 + 2.5 x = 1.884144368 + 2.5 Combine like terms: 1.884144368 + 2.5 = 4.384144368 x = 4.384144368 Simplifying x = 4.384144368

Subproblem 2

x + -2.5 = -1.884144368 Simplifying x + -2.5 = -1.884144368 Reorder the terms: -2.5 + x = -1.884144368 Solving -2.5 + x = -1.884144368 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -1.884144368 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -1.884144368 + 2.5 x = -1.884144368 + 2.5 Combine like terms: -1.884144368 + 2.5 = 0.615855632 x = 0.615855632 Simplifying x = 0.615855632

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.384144368, 0.615855632}

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