7.67x^2+2.73x-5.33=0

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Solution for 7.67x^2+2.73x-5.33=0 equation:


Simplifying
7.67x2 + 2.73x + -5.33 = 0

Reorder the terms:
-5.33 + 2.73x + 7.67x2 = 0

Solving
-5.33 + 2.73x + 7.67x2 = 0

Solving for variable 'x'.

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

Divide each side by '7.67'.
-0.6949152542 + 0.3559322034x + x2 = 0

Move the constant term to the right:

Add '0.6949152542' to each side of the equation.
-0.6949152542 + 0.3559322034x + 0.6949152542 + x2 = 0 + 0.6949152542

Reorder the terms:
-0.6949152542 + 0.6949152542 + 0.3559322034x + x2 = 0 + 0.6949152542

Combine like terms: -0.6949152542 + 0.6949152542 = 0.0000000000
0.0000000000 + 0.3559322034x + x2 = 0 + 0.6949152542
0.3559322034x + x2 = 0 + 0.6949152542

Combine like terms: 0 + 0.6949152542 = 0.6949152542
0.3559322034x + x2 = 0.6949152542

The x term is 0.3559322034x.  Take half its coefficient (0.1779661017).
Square it (0.03167193335) and add it to both sides.

Add '0.03167193335' to each side of the equation.
0.3559322034x + 0.03167193335 + x2 = 0.6949152542 + 0.03167193335

Reorder the terms:
0.03167193335 + 0.3559322034x + x2 = 0.6949152542 + 0.03167193335

Combine like terms: 0.6949152542 + 0.03167193335 = 0.72658718755
0.03167193335 + 0.3559322034x + x2 = 0.72658718755

Factor a perfect square on the left side:
(x + 0.1779661017)(x + 0.1779661017) = 0.72658718755

Calculate the square root of the right side: 0.852400837

Break this problem into two subproblems by setting 
(x + 0.1779661017) equal to 0.852400837 and -0.852400837.

Subproblem 1

x + 0.1779661017 = 0.852400837 Simplifying x + 0.1779661017 = 0.852400837 Reorder the terms: 0.1779661017 + x = 0.852400837 Solving 0.1779661017 + x = 0.852400837 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1779661017' to each side of the equation. 0.1779661017 + -0.1779661017 + x = 0.852400837 + -0.1779661017 Combine like terms: 0.1779661017 + -0.1779661017 = 0.0000000000 0.0000000000 + x = 0.852400837 + -0.1779661017 x = 0.852400837 + -0.1779661017 Combine like terms: 0.852400837 + -0.1779661017 = 0.6744347353 x = 0.6744347353 Simplifying x = 0.6744347353

Subproblem 2

x + 0.1779661017 = -0.852400837 Simplifying x + 0.1779661017 = -0.852400837 Reorder the terms: 0.1779661017 + x = -0.852400837 Solving 0.1779661017 + x = -0.852400837 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1779661017' to each side of the equation. 0.1779661017 + -0.1779661017 + x = -0.852400837 + -0.1779661017 Combine like terms: 0.1779661017 + -0.1779661017 = 0.0000000000 0.0000000000 + x = -0.852400837 + -0.1779661017 x = -0.852400837 + -0.1779661017 Combine like terms: -0.852400837 + -0.1779661017 = -1.0303669387 x = -1.0303669387 Simplifying x = -1.0303669387

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6744347353, -1.0303669387}

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