2.73x^2+1.47x-5.72=0

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Solution for 2.73x^2+1.47x-5.72=0 equation:


Simplifying
2.73x2 + 1.47x + -5.72 = 0

Reorder the terms:
-5.72 + 1.47x + 2.73x2 = 0

Solving
-5.72 + 1.47x + 2.73x2 = 0

Solving for variable 'x'.

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

Divide each side by '2.73'.
-2.095238095 + 0.5384615385x + x2 = 0

Move the constant term to the right:

Add '2.095238095' to each side of the equation.
-2.095238095 + 0.5384615385x + 2.095238095 + x2 = 0 + 2.095238095

Reorder the terms:
-2.095238095 + 2.095238095 + 0.5384615385x + x2 = 0 + 2.095238095

Combine like terms: -2.095238095 + 2.095238095 = 0.000000000
0.000000000 + 0.5384615385x + x2 = 0 + 2.095238095
0.5384615385x + x2 = 0 + 2.095238095

Combine like terms: 0 + 2.095238095 = 2.095238095
0.5384615385x + x2 = 2.095238095

The x term is 0.5384615385x.  Take half its coefficient (0.2692307693).
Square it (0.07248520714) and add it to both sides.

Add '0.07248520714' to each side of the equation.
0.5384615385x + 0.07248520714 + x2 = 2.095238095 + 0.07248520714

Reorder the terms:
0.07248520714 + 0.5384615385x + x2 = 2.095238095 + 0.07248520714

Combine like terms: 2.095238095 + 0.07248520714 = 2.16772330214
0.07248520714 + 0.5384615385x + x2 = 2.16772330214

Factor a perfect square on the left side:
(x + 0.2692307693)(x + 0.2692307693) = 2.16772330214

Calculate the square root of the right side: 1.472319022

Break this problem into two subproblems by setting 
(x + 0.2692307693) equal to 1.472319022 and -1.472319022.

Subproblem 1

x + 0.2692307693 = 1.472319022 Simplifying x + 0.2692307693 = 1.472319022 Reorder the terms: 0.2692307693 + x = 1.472319022 Solving 0.2692307693 + x = 1.472319022 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2692307693' to each side of the equation. 0.2692307693 + -0.2692307693 + x = 1.472319022 + -0.2692307693 Combine like terms: 0.2692307693 + -0.2692307693 = 0.0000000000 0.0000000000 + x = 1.472319022 + -0.2692307693 x = 1.472319022 + -0.2692307693 Combine like terms: 1.472319022 + -0.2692307693 = 1.2030882527 x = 1.2030882527 Simplifying x = 1.2030882527

Subproblem 2

x + 0.2692307693 = -1.472319022 Simplifying x + 0.2692307693 = -1.472319022 Reorder the terms: 0.2692307693 + x = -1.472319022 Solving 0.2692307693 + x = -1.472319022 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2692307693' to each side of the equation. 0.2692307693 + -0.2692307693 + x = -1.472319022 + -0.2692307693 Combine like terms: 0.2692307693 + -0.2692307693 = 0.0000000000 0.0000000000 + x = -1.472319022 + -0.2692307693 x = -1.472319022 + -0.2692307693 Combine like terms: -1.472319022 + -0.2692307693 = -1.7415497913 x = -1.7415497913 Simplifying x = -1.7415497913

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.2030882527, -1.7415497913}

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