5((x-9)(x-9))=3

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Solution for 5((x-9)(x-9))=3 equation:


Simplifying
5((x + -9)(x + -9)) = 3

Reorder the terms:
5((-9 + x)(x + -9)) = 3

Reorder the terms:
5((-9 + x)(-9 + x)) = 3

Multiply (-9 + x) * (-9 + x)
5((-9(-9 + x) + x(-9 + x))) = 3
5(((-9 * -9 + x * -9) + x(-9 + x))) = 3
5(((81 + -9x) + x(-9 + x))) = 3
5((81 + -9x + (-9 * x + x * x))) = 3
5((81 + -9x + (-9x + x2))) = 3

Combine like terms: -9x + -9x = -18x
5((81 + -18x + x2)) = 3
(81 * 5 + -18x * 5 + x2 * 5) = 3
(405 + -90x + 5x2) = 3

Solving
405 + -90x + 5x2 = 3

Solving for variable 'x'.

Reorder the terms:
405 + -3 + -90x + 5x2 = 3 + -3

Combine like terms: 405 + -3 = 402
402 + -90x + 5x2 = 3 + -3

Combine like terms: 3 + -3 = 0
402 + -90x + 5x2 = 0

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

Divide each side by '5'.
80.4 + -18x + x2 = 0

Move the constant term to the right:

Add '-80.4' to each side of the equation.
80.4 + -18x + -80.4 + x2 = 0 + -80.4

Reorder the terms:
80.4 + -80.4 + -18x + x2 = 0 + -80.4

Combine like terms: 80.4 + -80.4 = 0.0
0.0 + -18x + x2 = 0 + -80.4
-18x + x2 = 0 + -80.4

Combine like terms: 0 + -80.4 = -80.4
-18x + x2 = -80.4

The x term is -18x.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18x + 81 + x2 = -80.4 + 81

Reorder the terms:
81 + -18x + x2 = -80.4 + 81

Combine like terms: -80.4 + 81 = 0.6
81 + -18x + x2 = 0.6

Factor a perfect square on the left side:
(x + -9)(x + -9) = 0.6

Calculate the square root of the right side: 0.774596669

Break this problem into two subproblems by setting 
(x + -9) equal to 0.774596669 and -0.774596669.

Subproblem 1

x + -9 = 0.774596669 Simplifying x + -9 = 0.774596669 Reorder the terms: -9 + x = 0.774596669 Solving -9 + x = 0.774596669 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = 0.774596669 + 9 Combine like terms: -9 + 9 = 0 0 + x = 0.774596669 + 9 x = 0.774596669 + 9 Combine like terms: 0.774596669 + 9 = 9.774596669 x = 9.774596669 Simplifying x = 9.774596669

Subproblem 2

x + -9 = -0.774596669 Simplifying x + -9 = -0.774596669 Reorder the terms: -9 + x = -0.774596669 Solving -9 + x = -0.774596669 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = -0.774596669 + 9 Combine like terms: -9 + 9 = 0 0 + x = -0.774596669 + 9 x = -0.774596669 + 9 Combine like terms: -0.774596669 + 9 = 8.225403331 x = 8.225403331 Simplifying x = 8.225403331

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.774596669, 8.225403331}

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