9x^2=6-4x

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Solution for 9x^2=6-4x equation:


Simplifying
9x2 = 6 + -4x

Solving
9x2 = 6 + -4x

Solving for variable 'x'.

Reorder the terms:
-6 + 4x + 9x2 = 6 + -4x + -6 + 4x

Reorder the terms:
-6 + 4x + 9x2 = 6 + -6 + -4x + 4x

Combine like terms: 6 + -6 = 0
-6 + 4x + 9x2 = 0 + -4x + 4x
-6 + 4x + 9x2 = -4x + 4x

Combine like terms: -4x + 4x = 0
-6 + 4x + 9x2 = 0

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

Divide each side by '9'.
-0.6666666667 + 0.4444444444x + x2 = 0

Move the constant term to the right:

Add '0.6666666667' to each side of the equation.
-0.6666666667 + 0.4444444444x + 0.6666666667 + x2 = 0 + 0.6666666667

Reorder the terms:
-0.6666666667 + 0.6666666667 + 0.4444444444x + x2 = 0 + 0.6666666667

Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000
0.0000000000 + 0.4444444444x + x2 = 0 + 0.6666666667
0.4444444444x + x2 = 0 + 0.6666666667

Combine like terms: 0 + 0.6666666667 = 0.6666666667
0.4444444444x + x2 = 0.6666666667

The x term is 0.4444444444x.  Take half its coefficient (0.2222222222).
Square it (0.04938271604) and add it to both sides.

Add '0.04938271604' to each side of the equation.
0.4444444444x + 0.04938271604 + x2 = 0.6666666667 + 0.04938271604

Reorder the terms:
0.04938271604 + 0.4444444444x + x2 = 0.6666666667 + 0.04938271604

Combine like terms: 0.6666666667 + 0.04938271604 = 0.71604938274
0.04938271604 + 0.4444444444x + x2 = 0.71604938274

Factor a perfect square on the left side:
(x + 0.2222222222)(x + 0.2222222222) = 0.71604938274

Calculate the square root of the right side: 0.846197012

Break this problem into two subproblems by setting 
(x + 0.2222222222) equal to 0.846197012 and -0.846197012.

Subproblem 1

x + 0.2222222222 = 0.846197012 Simplifying x + 0.2222222222 = 0.846197012 Reorder the terms: 0.2222222222 + x = 0.846197012 Solving 0.2222222222 + x = 0.846197012 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2222222222' to each side of the equation. 0.2222222222 + -0.2222222222 + x = 0.846197012 + -0.2222222222 Combine like terms: 0.2222222222 + -0.2222222222 = 0.0000000000 0.0000000000 + x = 0.846197012 + -0.2222222222 x = 0.846197012 + -0.2222222222 Combine like terms: 0.846197012 + -0.2222222222 = 0.6239747898 x = 0.6239747898 Simplifying x = 0.6239747898

Subproblem 2

x + 0.2222222222 = -0.846197012 Simplifying x + 0.2222222222 = -0.846197012 Reorder the terms: 0.2222222222 + x = -0.846197012 Solving 0.2222222222 + x = -0.846197012 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2222222222' to each side of the equation. 0.2222222222 + -0.2222222222 + x = -0.846197012 + -0.2222222222 Combine like terms: 0.2222222222 + -0.2222222222 = 0.0000000000 0.0000000000 + x = -0.846197012 + -0.2222222222 x = -0.846197012 + -0.2222222222 Combine like terms: -0.846197012 + -0.2222222222 = -1.0684192342 x = -1.0684192342 Simplifying x = -1.0684192342

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6239747898, -1.0684192342}

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