((x-6)2+5x^2)-36=0

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Solution for ((x-6)2+5x^2)-36=0 equation:


Simplifying
((x + -6) * 2 + 5x2) + -36 = 0

Reorder the terms:
((-6 + x) * 2 + 5x2) + -36 = 0

Reorder the terms for easier multiplication:
(2(-6 + x) + 5x2) + -36 = 0
((-6 * 2 + x * 2) + 5x2) + -36 = 0
((-12 + 2x) + 5x2) + -36 = 0

Remove parenthesis around (-12 + 2x + 5x2)
-12 + 2x + 5x2 + -36 = 0

Reorder the terms:
-12 + -36 + 2x + 5x2 = 0

Combine like terms: -12 + -36 = -48
-48 + 2x + 5x2 = 0

Solving
-48 + 2x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-9.6 + 0.4x + x2 = 0

Move the constant term to the right:

Add '9.6' to each side of the equation.
-9.6 + 0.4x + 9.6 + x2 = 0 + 9.6

Reorder the terms:
-9.6 + 9.6 + 0.4x + x2 = 0 + 9.6

Combine like terms: -9.6 + 9.6 = 0.0
0.0 + 0.4x + x2 = 0 + 9.6
0.4x + x2 = 0 + 9.6

Combine like terms: 0 + 9.6 = 9.6
0.4x + x2 = 9.6

The x term is 0.4x.  Take half its coefficient (0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
0.4x + 0.04 + x2 = 9.6 + 0.04

Reorder the terms:
0.04 + 0.4x + x2 = 9.6 + 0.04

Combine like terms: 9.6 + 0.04 = 9.64
0.04 + 0.4x + x2 = 9.64

Factor a perfect square on the left side:
(x + 0.2)(x + 0.2) = 9.64

Calculate the square root of the right side: 3.104834939

Break this problem into two subproblems by setting 
(x + 0.2) equal to 3.104834939 and -3.104834939.

Subproblem 1

x + 0.2 = 3.104834939 Simplifying x + 0.2 = 3.104834939 Reorder the terms: 0.2 + x = 3.104834939 Solving 0.2 + x = 3.104834939 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + x = 3.104834939 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + x = 3.104834939 + -0.2 x = 3.104834939 + -0.2 Combine like terms: 3.104834939 + -0.2 = 2.904834939 x = 2.904834939 Simplifying x = 2.904834939

Subproblem 2

x + 0.2 = -3.104834939 Simplifying x + 0.2 = -3.104834939 Reorder the terms: 0.2 + x = -3.104834939 Solving 0.2 + x = -3.104834939 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + x = -3.104834939 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + x = -3.104834939 + -0.2 x = -3.104834939 + -0.2 Combine like terms: -3.104834939 + -0.2 = -3.304834939 x = -3.304834939 Simplifying x = -3.304834939

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.904834939, -3.304834939}

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