(3x-3)2-(2x-7)=(3x-5)(3x+5)

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Solution for (3x-3)2-(2x-7)=(3x-5)(3x+5) equation:


Simplifying
(3x + -3) * 2 + -1(2x + -7) = (3x + -5)(3x + 5)

Reorder the terms:
(-3 + 3x) * 2 + -1(2x + -7) = (3x + -5)(3x + 5)

Reorder the terms for easier multiplication:
2(-3 + 3x) + -1(2x + -7) = (3x + -5)(3x + 5)
(-3 * 2 + 3x * 2) + -1(2x + -7) = (3x + -5)(3x + 5)
(-6 + 6x) + -1(2x + -7) = (3x + -5)(3x + 5)

Reorder the terms:
-6 + 6x + -1(-7 + 2x) = (3x + -5)(3x + 5)
-6 + 6x + (-7 * -1 + 2x * -1) = (3x + -5)(3x + 5)
-6 + 6x + (7 + -2x) = (3x + -5)(3x + 5)

Reorder the terms:
-6 + 7 + 6x + -2x = (3x + -5)(3x + 5)

Combine like terms: -6 + 7 = 1
1 + 6x + -2x = (3x + -5)(3x + 5)

Combine like terms: 6x + -2x = 4x
1 + 4x = (3x + -5)(3x + 5)

Reorder the terms:
1 + 4x = (-5 + 3x)(3x + 5)

Reorder the terms:
1 + 4x = (-5 + 3x)(5 + 3x)

Multiply (-5 + 3x) * (5 + 3x)
1 + 4x = (-5(5 + 3x) + 3x * (5 + 3x))
1 + 4x = ((5 * -5 + 3x * -5) + 3x * (5 + 3x))
1 + 4x = ((-25 + -15x) + 3x * (5 + 3x))
1 + 4x = (-25 + -15x + (5 * 3x + 3x * 3x))
1 + 4x = (-25 + -15x + (15x + 9x2))

Combine like terms: -15x + 15x = 0
1 + 4x = (-25 + 0 + 9x2)
1 + 4x = (-25 + 9x2)

Solving
1 + 4x = -25 + 9x2

Solving for variable 'x'.

Reorder the terms:
1 + 25 + 4x + -9x2 = -25 + 9x2 + 25 + -9x2

Combine like terms: 1 + 25 = 26
26 + 4x + -9x2 = -25 + 9x2 + 25 + -9x2

Reorder the terms:
26 + 4x + -9x2 = -25 + 25 + 9x2 + -9x2

Combine like terms: -25 + 25 = 0
26 + 4x + -9x2 = 0 + 9x2 + -9x2
26 + 4x + -9x2 = 9x2 + -9x2

Combine like terms: 9x2 + -9x2 = 0
26 + 4x + -9x2 = 0

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

Divide each side by '-9'.
-2.888888889 + -0.4444444444x + x2 = 0

Move the constant term to the right:

Add '2.888888889' to each side of the equation.
-2.888888889 + -0.4444444444x + 2.888888889 + x2 = 0 + 2.888888889

Reorder the terms:
-2.888888889 + 2.888888889 + -0.4444444444x + x2 = 0 + 2.888888889

Combine like terms: -2.888888889 + 2.888888889 = 0.000000000
0.000000000 + -0.4444444444x + x2 = 0 + 2.888888889
-0.4444444444x + x2 = 0 + 2.888888889

Combine like terms: 0 + 2.888888889 = 2.888888889
-0.4444444444x + x2 = 2.888888889

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 = 2.888888889 + 0.04938271604

Reorder the terms:
0.04938271604 + -0.4444444444x + x2 = 2.888888889 + 0.04938271604

Combine like terms: 2.888888889 + 0.04938271604 = 2.93827160504
0.04938271604 + -0.4444444444x + x2 = 2.93827160504

Factor a perfect square on the left side:
(x + -0.2222222222)(x + -0.2222222222) = 2.93827160504

Calculate the square root of the right side: 1.714138736

Break this problem into two subproblems by setting 
(x + -0.2222222222) equal to 1.714138736 and -1.714138736.

Subproblem 1

x + -0.2222222222 = 1.714138736 Simplifying x + -0.2222222222 = 1.714138736 Reorder the terms: -0.2222222222 + x = 1.714138736 Solving -0.2222222222 + x = 1.714138736 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 = 1.714138736 + 0.2222222222 Combine like terms: -0.2222222222 + 0.2222222222 = 0.0000000000 0.0000000000 + x = 1.714138736 + 0.2222222222 x = 1.714138736 + 0.2222222222 Combine like terms: 1.714138736 + 0.2222222222 = 1.9363609582 x = 1.9363609582 Simplifying x = 1.9363609582

Subproblem 2

x + -0.2222222222 = -1.714138736 Simplifying x + -0.2222222222 = -1.714138736 Reorder the terms: -0.2222222222 + x = -1.714138736 Solving -0.2222222222 + x = -1.714138736 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 = -1.714138736 + 0.2222222222 Combine like terms: -0.2222222222 + 0.2222222222 = 0.0000000000 0.0000000000 + x = -1.714138736 + 0.2222222222 x = -1.714138736 + 0.2222222222 Combine like terms: -1.714138736 + 0.2222222222 = -1.4919165138 x = -1.4919165138 Simplifying x = -1.4919165138

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.9363609582, -1.4919165138}

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