x^2-5.8x=-7.1

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Solution for x^2-5.8x=-7.1 equation:


Simplifying
x2 + -5.8x = -7.1

Reorder the terms:
-5.8x + x2 = -7.1

Solving
-5.8x + x2 = -7.1

Solving for variable 'x'.

Reorder the terms:
7.1 + -5.8x + x2 = -7.1 + 7.1

Combine like terms: -7.1 + 7.1 = 0.0
7.1 + -5.8x + x2 = 0.0

Begin completing the square.

Move the constant term to the right:

Add '-7.1' to each side of the equation.
7.1 + -5.8x + -7.1 + x2 = 0.0 + -7.1

Reorder the terms:
7.1 + -7.1 + -5.8x + x2 = 0.0 + -7.1

Combine like terms: 7.1 + -7.1 = 0.0
0.0 + -5.8x + x2 = 0.0 + -7.1
-5.8x + x2 = 0.0 + -7.1

Combine like terms: 0.0 + -7.1 = -7.1
-5.8x + x2 = -7.1

The x term is -5.8x.  Take half its coefficient (-2.9).
Square it (8.41) and add it to both sides.

Add '8.41' to each side of the equation.
-5.8x + 8.41 + x2 = -7.1 + 8.41

Reorder the terms:
8.41 + -5.8x + x2 = -7.1 + 8.41

Combine like terms: -7.1 + 8.41 = 1.31
8.41 + -5.8x + x2 = 1.31

Factor a perfect square on the left side:
(x + -2.9)(x + -2.9) = 1.31

Calculate the square root of the right side: 1.144552314

Break this problem into two subproblems by setting 
(x + -2.9) equal to 1.144552314 and -1.144552314.

Subproblem 1

x + -2.9 = 1.144552314 Simplifying x + -2.9 = 1.144552314 Reorder the terms: -2.9 + x = 1.144552314 Solving -2.9 + x = 1.144552314 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.9' to each side of the equation. -2.9 + 2.9 + x = 1.144552314 + 2.9 Combine like terms: -2.9 + 2.9 = 0.0 0.0 + x = 1.144552314 + 2.9 x = 1.144552314 + 2.9 Combine like terms: 1.144552314 + 2.9 = 4.044552314 x = 4.044552314 Simplifying x = 4.044552314

Subproblem 2

x + -2.9 = -1.144552314 Simplifying x + -2.9 = -1.144552314 Reorder the terms: -2.9 + x = -1.144552314 Solving -2.9 + x = -1.144552314 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.9' to each side of the equation. -2.9 + 2.9 + x = -1.144552314 + 2.9 Combine like terms: -2.9 + 2.9 = 0.0 0.0 + x = -1.144552314 + 2.9 x = -1.144552314 + 2.9 Combine like terms: -1.144552314 + 2.9 = 1.755447686 x = 1.755447686 Simplifying x = 1.755447686

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.044552314, 1.755447686}

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