4.38x^2-3.43x-5.41=0

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Solution for 4.38x^2-3.43x-5.41=0 equation:


Simplifying
4.38x2 + -3.43x + -5.41 = 0

Reorder the terms:
-5.41 + -3.43x + 4.38x2 = 0

Solving
-5.41 + -3.43x + 4.38x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
4.38 the coefficient of the squared term: 

Divide each side by '4.38'.
-1.235159817 + -0.7831050228x + x2 = 0

Move the constant term to the right:

Add '1.235159817' to each side of the equation.
-1.235159817 + -0.7831050228x + 1.235159817 + x2 = 0 + 1.235159817

Reorder the terms:
-1.235159817 + 1.235159817 + -0.7831050228x + x2 = 0 + 1.235159817

Combine like terms: -1.235159817 + 1.235159817 = 0.000000000
0.000000000 + -0.7831050228x + x2 = 0 + 1.235159817
-0.7831050228x + x2 = 0 + 1.235159817

Combine like terms: 0 + 1.235159817 = 1.235159817
-0.7831050228x + x2 = 1.235159817

The x term is -0.7831050228x.  Take half its coefficient (-0.3915525114).
Square it (0.1533133692) and add it to both sides.

Add '0.1533133692' to each side of the equation.
-0.7831050228x + 0.1533133692 + x2 = 1.235159817 + 0.1533133692

Reorder the terms:
0.1533133692 + -0.7831050228x + x2 = 1.235159817 + 0.1533133692

Combine like terms: 1.235159817 + 0.1533133692 = 1.3884731862
0.1533133692 + -0.7831050228x + x2 = 1.3884731862

Factor a perfect square on the left side:
(x + -0.3915525114)(x + -0.3915525114) = 1.3884731862

Calculate the square root of the right side: 1.178334921

Break this problem into two subproblems by setting 
(x + -0.3915525114) equal to 1.178334921 and -1.178334921.

Subproblem 1

x + -0.3915525114 = 1.178334921 Simplifying x + -0.3915525114 = 1.178334921 Reorder the terms: -0.3915525114 + x = 1.178334921 Solving -0.3915525114 + x = 1.178334921 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3915525114' to each side of the equation. -0.3915525114 + 0.3915525114 + x = 1.178334921 + 0.3915525114 Combine like terms: -0.3915525114 + 0.3915525114 = 0.0000000000 0.0000000000 + x = 1.178334921 + 0.3915525114 x = 1.178334921 + 0.3915525114 Combine like terms: 1.178334921 + 0.3915525114 = 1.5698874324 x = 1.5698874324 Simplifying x = 1.5698874324

Subproblem 2

x + -0.3915525114 = -1.178334921 Simplifying x + -0.3915525114 = -1.178334921 Reorder the terms: -0.3915525114 + x = -1.178334921 Solving -0.3915525114 + x = -1.178334921 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3915525114' to each side of the equation. -0.3915525114 + 0.3915525114 + x = -1.178334921 + 0.3915525114 Combine like terms: -0.3915525114 + 0.3915525114 = 0.0000000000 0.0000000000 + x = -1.178334921 + 0.3915525114 x = -1.178334921 + 0.3915525114 Combine like terms: -1.178334921 + 0.3915525114 = -0.7867824096 x = -0.7867824096 Simplifying x = -0.7867824096

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.5698874324, -0.7867824096}

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