9x^2+46x-5=0

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Solution for 9x^2+46x-5=0 equation:


Simplifying
9x2 + 46x + -5 = 0

Reorder the terms:
-5 + 46x + 9x2 = 0

Solving
-5 + 46x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
-0.5555555556 + 5.111111111x + x2 = 0

Move the constant term to the right:

Add '0.5555555556' to each side of the equation.
-0.5555555556 + 5.111111111x + 0.5555555556 + x2 = 0 + 0.5555555556

Reorder the terms:
-0.5555555556 + 0.5555555556 + 5.111111111x + x2 = 0 + 0.5555555556

Combine like terms: -0.5555555556 + 0.5555555556 = 0.0000000000
0.0000000000 + 5.111111111x + x2 = 0 + 0.5555555556
5.111111111x + x2 = 0 + 0.5555555556

Combine like terms: 0 + 0.5555555556 = 0.5555555556
5.111111111x + x2 = 0.5555555556

The x term is 5.111111111x.  Take half its coefficient (2.555555556).
Square it (6.530864200) and add it to both sides.

Add '6.530864200' to each side of the equation.
5.111111111x + 6.530864200 + x2 = 0.5555555556 + 6.530864200

Reorder the terms:
6.530864200 + 5.111111111x + x2 = 0.5555555556 + 6.530864200

Combine like terms: 0.5555555556 + 6.530864200 = 7.0864197556
6.530864200 + 5.111111111x + x2 = 7.0864197556

Factor a perfect square on the left side:
(x + 2.555555556)(x + 2.555555556) = 7.0864197556

Calculate the square root of the right side: 2.662033012

Break this problem into two subproblems by setting 
(x + 2.555555556) equal to 2.662033012 and -2.662033012.

Subproblem 1

x + 2.555555556 = 2.662033012 Simplifying x + 2.555555556 = 2.662033012 Reorder the terms: 2.555555556 + x = 2.662033012 Solving 2.555555556 + x = 2.662033012 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.555555556' to each side of the equation. 2.555555556 + -2.555555556 + x = 2.662033012 + -2.555555556 Combine like terms: 2.555555556 + -2.555555556 = 0.000000000 0.000000000 + x = 2.662033012 + -2.555555556 x = 2.662033012 + -2.555555556 Combine like terms: 2.662033012 + -2.555555556 = 0.106477456 x = 0.106477456 Simplifying x = 0.106477456

Subproblem 2

x + 2.555555556 = -2.662033012 Simplifying x + 2.555555556 = -2.662033012 Reorder the terms: 2.555555556 + x = -2.662033012 Solving 2.555555556 + x = -2.662033012 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.555555556' to each side of the equation. 2.555555556 + -2.555555556 + x = -2.662033012 + -2.555555556 Combine like terms: 2.555555556 + -2.555555556 = 0.000000000 0.000000000 + x = -2.662033012 + -2.555555556 x = -2.662033012 + -2.555555556 Combine like terms: -2.662033012 + -2.555555556 = -5.217588568 x = -5.217588568 Simplifying x = -5.217588568

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.106477456, -5.217588568}

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