x^2+9x^2+30x+25=4x^2+24x+36

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Solution for x^2+9x^2+30x+25=4x^2+24x+36 equation:


Simplifying
x2 + 9x2 + 30x + 25 = 4x2 + 24x + 36

Reorder the terms:
25 + 30x + x2 + 9x2 = 4x2 + 24x + 36

Combine like terms: x2 + 9x2 = 10x2
25 + 30x + 10x2 = 4x2 + 24x + 36

Reorder the terms:
25 + 30x + 10x2 = 36 + 24x + 4x2

Solving
25 + 30x + 10x2 = 36 + 24x + 4x2

Solving for variable 'x'.

Reorder the terms:
25 + -36 + 30x + -24x + 10x2 + -4x2 = 36 + 24x + 4x2 + -36 + -24x + -4x2

Combine like terms: 25 + -36 = -11
-11 + 30x + -24x + 10x2 + -4x2 = 36 + 24x + 4x2 + -36 + -24x + -4x2

Combine like terms: 30x + -24x = 6x
-11 + 6x + 10x2 + -4x2 = 36 + 24x + 4x2 + -36 + -24x + -4x2

Combine like terms: 10x2 + -4x2 = 6x2
-11 + 6x + 6x2 = 36 + 24x + 4x2 + -36 + -24x + -4x2

Reorder the terms:
-11 + 6x + 6x2 = 36 + -36 + 24x + -24x + 4x2 + -4x2

Combine like terms: 36 + -36 = 0
-11 + 6x + 6x2 = 0 + 24x + -24x + 4x2 + -4x2
-11 + 6x + 6x2 = 24x + -24x + 4x2 + -4x2

Combine like terms: 24x + -24x = 0
-11 + 6x + 6x2 = 0 + 4x2 + -4x2
-11 + 6x + 6x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-11 + 6x + 6x2 = 0

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

Divide each side by '6'.
-1.833333333 + x + x2 = 0

Move the constant term to the right:

Add '1.833333333' to each side of the equation.
-1.833333333 + x + 1.833333333 + x2 = 0 + 1.833333333

Reorder the terms:
-1.833333333 + 1.833333333 + x + x2 = 0 + 1.833333333

Combine like terms: -1.833333333 + 1.833333333 = 0.000000000
0.000000000 + x + x2 = 0 + 1.833333333
x + x2 = 0 + 1.833333333

Combine like terms: 0 + 1.833333333 = 1.833333333
x + x2 = 1.833333333

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 1.833333333 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 1.833333333 + 0.25

Combine like terms: 1.833333333 + 0.25 = 2.083333333
1.25 + x2 = 2.083333333

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 2.083333333

Calculate the square root of the right side: 1.443375673

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.443375673 and -1.443375673.

Subproblem 1

x + 0.5 = 1.443375673 Simplifying x + 0.5 = 1.443375673 Reorder the terms: 0.5 + x = 1.443375673 Solving 0.5 + x = 1.443375673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.443375673 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.443375673 + -0.5 x = 1.443375673 + -0.5 Combine like terms: 1.443375673 + -0.5 = 0.943375673 x = 0.943375673 Simplifying x = 0.943375673

Subproblem 2

x + 0.5 = -1.443375673 Simplifying x + 0.5 = -1.443375673 Reorder the terms: 0.5 + x = -1.443375673 Solving 0.5 + x = -1.443375673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.443375673 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.443375673 + -0.5 x = -1.443375673 + -0.5 Combine like terms: -1.443375673 + -0.5 = -1.943375673 x = -1.943375673 Simplifying x = -1.943375673

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.943375673, -1.943375673}

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