(3x-5)(3x-5)=26

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Solution for (3x-5)(3x-5)=26 equation:


Simplifying
(3x + -5)(3x + -5) = 26

Reorder the terms:
(-5 + 3x)(3x + -5) = 26

Reorder the terms:
(-5 + 3x)(-5 + 3x) = 26

Multiply (-5 + 3x) * (-5 + 3x)
(-5(-5 + 3x) + 3x * (-5 + 3x)) = 26
((-5 * -5 + 3x * -5) + 3x * (-5 + 3x)) = 26
((25 + -15x) + 3x * (-5 + 3x)) = 26
(25 + -15x + (-5 * 3x + 3x * 3x)) = 26
(25 + -15x + (-15x + 9x2)) = 26

Combine like terms: -15x + -15x = -30x
(25 + -30x + 9x2) = 26

Solving
25 + -30x + 9x2 = 26

Solving for variable 'x'.

Reorder the terms:
25 + -26 + -30x + 9x2 = 26 + -26

Combine like terms: 25 + -26 = -1
-1 + -30x + 9x2 = 26 + -26

Combine like terms: 26 + -26 = 0
-1 + -30x + 9x2 = 0

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

Divide each side by '9'.
-0.1111111111 + -3.333333333x + x2 = 0

Move the constant term to the right:

Add '0.1111111111' to each side of the equation.
-0.1111111111 + -3.333333333x + 0.1111111111 + x2 = 0 + 0.1111111111

Reorder the terms:
-0.1111111111 + 0.1111111111 + -3.333333333x + x2 = 0 + 0.1111111111

Combine like terms: -0.1111111111 + 0.1111111111 = 0.0000000000
0.0000000000 + -3.333333333x + x2 = 0 + 0.1111111111
-3.333333333x + x2 = 0 + 0.1111111111

Combine like terms: 0 + 0.1111111111 = 0.1111111111
-3.333333333x + x2 = 0.1111111111

The x term is -3.333333333x.  Take half its coefficient (-1.666666667).
Square it (2.777777779) and add it to both sides.

Add '2.777777779' to each side of the equation.
-3.333333333x + 2.777777779 + x2 = 0.1111111111 + 2.777777779

Reorder the terms:
2.777777779 + -3.333333333x + x2 = 0.1111111111 + 2.777777779

Combine like terms: 0.1111111111 + 2.777777779 = 2.8888888901
2.777777779 + -3.333333333x + x2 = 2.8888888901

Factor a perfect square on the left side:
(x + -1.666666667)(x + -1.666666667) = 2.8888888901

Calculate the square root of the right side: 1.699673172

Break this problem into two subproblems by setting 
(x + -1.666666667) equal to 1.699673172 and -1.699673172.

Subproblem 1

x + -1.666666667 = 1.699673172 Simplifying x + -1.666666667 = 1.699673172 Reorder the terms: -1.666666667 + x = 1.699673172 Solving -1.666666667 + x = 1.699673172 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.666666667' to each side of the equation. -1.666666667 + 1.666666667 + x = 1.699673172 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + x = 1.699673172 + 1.666666667 x = 1.699673172 + 1.666666667 Combine like terms: 1.699673172 + 1.666666667 = 3.366339839 x = 3.366339839 Simplifying x = 3.366339839

Subproblem 2

x + -1.666666667 = -1.699673172 Simplifying x + -1.666666667 = -1.699673172 Reorder the terms: -1.666666667 + x = -1.699673172 Solving -1.666666667 + x = -1.699673172 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.666666667' to each side of the equation. -1.666666667 + 1.666666667 + x = -1.699673172 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + x = -1.699673172 + 1.666666667 x = -1.699673172 + 1.666666667 Combine like terms: -1.699673172 + 1.666666667 = -0.033006505 x = -0.033006505 Simplifying x = -0.033006505

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.366339839, -0.033006505}

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