9x^2+36x-46=0

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Solution for 9x^2+36x-46=0 equation:


Simplifying
9x2 + 36x + -46 = 0

Reorder the terms:
-46 + 36x + 9x2 = 0

Solving
-46 + 36x + 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'.
-5.111111111 + 4x + x2 = 0

Move the constant term to the right:

Add '5.111111111' to each side of the equation.
-5.111111111 + 4x + 5.111111111 + x2 = 0 + 5.111111111

Reorder the terms:
-5.111111111 + 5.111111111 + 4x + x2 = 0 + 5.111111111

Combine like terms: -5.111111111 + 5.111111111 = 0.000000000
0.000000000 + 4x + x2 = 0 + 5.111111111
4x + x2 = 0 + 5.111111111

Combine like terms: 0 + 5.111111111 = 5.111111111
4x + x2 = 5.111111111

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = 5.111111111 + 4

Reorder the terms:
4 + 4x + x2 = 5.111111111 + 4

Combine like terms: 5.111111111 + 4 = 9.111111111
4 + 4x + x2 = 9.111111111

Factor a perfect square on the left side:
(x + 2)(x + 2) = 9.111111111

Calculate the square root of the right side: 3.018461713

Break this problem into two subproblems by setting 
(x + 2) equal to 3.018461713 and -3.018461713.

Subproblem 1

x + 2 = 3.018461713 Simplifying x + 2 = 3.018461713 Reorder the terms: 2 + x = 3.018461713 Solving 2 + x = 3.018461713 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 3.018461713 + -2 Combine like terms: 2 + -2 = 0 0 + x = 3.018461713 + -2 x = 3.018461713 + -2 Combine like terms: 3.018461713 + -2 = 1.018461713 x = 1.018461713 Simplifying x = 1.018461713

Subproblem 2

x + 2 = -3.018461713 Simplifying x + 2 = -3.018461713 Reorder the terms: 2 + x = -3.018461713 Solving 2 + x = -3.018461713 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -3.018461713 + -2 Combine like terms: 2 + -2 = 0 0 + x = -3.018461713 + -2 x = -3.018461713 + -2 Combine like terms: -3.018461713 + -2 = -5.018461713 x = -5.018461713 Simplifying x = -5.018461713

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.018461713, -5.018461713}

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