5x+6-11x^2+90.64=0

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Solution for 5x+6-11x^2+90.64=0 equation:


Simplifying
5x + 6 + -11x2 + 90.64 = 0

Reorder the terms:
6 + 90.64 + 5x + -11x2 = 0

Combine like terms: 6 + 90.64 = 96.64
96.64 + 5x + -11x2 = 0

Solving
96.64 + 5x + -11x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-11 the coefficient of the squared term: 

Divide each side by '-11'.
-8.785454545 + -0.4545454545x + x2 = 0

Move the constant term to the right:

Add '8.785454545' to each side of the equation.
-8.785454545 + -0.4545454545x + 8.785454545 + x2 = 0 + 8.785454545

Reorder the terms:
-8.785454545 + 8.785454545 + -0.4545454545x + x2 = 0 + 8.785454545

Combine like terms: -8.785454545 + 8.785454545 = 0.000000000
0.000000000 + -0.4545454545x + x2 = 0 + 8.785454545
-0.4545454545x + x2 = 0 + 8.785454545

Combine like terms: 0 + 8.785454545 = 8.785454545
-0.4545454545x + x2 = 8.785454545

The x term is -0.4545454545x.  Take half its coefficient (-0.2272727273).
Square it (0.05165289257) and add it to both sides.

Add '0.05165289257' to each side of the equation.
-0.4545454545x + 0.05165289257 + x2 = 8.785454545 + 0.05165289257

Reorder the terms:
0.05165289257 + -0.4545454545x + x2 = 8.785454545 + 0.05165289257

Combine like terms: 8.785454545 + 0.05165289257 = 8.83710743757
0.05165289257 + -0.4545454545x + x2 = 8.83710743757

Factor a perfect square on the left side:
(x + -0.2272727273)(x + -0.2272727273) = 8.83710743757

Calculate the square root of the right side: 2.972727273

Break this problem into two subproblems by setting 
(x + -0.2272727273) equal to 2.972727273 and -2.972727273.

Subproblem 1

x + -0.2272727273 = 2.972727273 Simplifying x + -0.2272727273 = 2.972727273 Reorder the terms: -0.2272727273 + x = 2.972727273 Solving -0.2272727273 + x = 2.972727273 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2272727273' to each side of the equation. -0.2272727273 + 0.2272727273 + x = 2.972727273 + 0.2272727273 Combine like terms: -0.2272727273 + 0.2272727273 = 0.0000000000 0.0000000000 + x = 2.972727273 + 0.2272727273 x = 2.972727273 + 0.2272727273 Combine like terms: 2.972727273 + 0.2272727273 = 3.2000000003 x = 3.2000000003 Simplifying x = 3.2000000003

Subproblem 2

x + -0.2272727273 = -2.972727273 Simplifying x + -0.2272727273 = -2.972727273 Reorder the terms: -0.2272727273 + x = -2.972727273 Solving -0.2272727273 + x = -2.972727273 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2272727273' to each side of the equation. -0.2272727273 + 0.2272727273 + x = -2.972727273 + 0.2272727273 Combine like terms: -0.2272727273 + 0.2272727273 = 0.0000000000 0.0000000000 + x = -2.972727273 + 0.2272727273 x = -2.972727273 + 0.2272727273 Combine like terms: -2.972727273 + 0.2272727273 = -2.7454545457 x = -2.7454545457 Simplifying x = -2.7454545457

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.2000000003, -2.7454545457}

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