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

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


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

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

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

Multiply (-3 + x) * (3 + 2x)
(-3(3 + 2x) + x(3 + 2x)) = 2x + -5
((3 * -3 + 2x * -3) + x(3 + 2x)) = 2x + -5
((-9 + -6x) + x(3 + 2x)) = 2x + -5
(-9 + -6x + (3 * x + 2x * x)) = 2x + -5
(-9 + -6x + (3x + 2x2)) = 2x + -5

Combine like terms: -6x + 3x = -3x
(-9 + -3x + 2x2) = 2x + -5

Reorder the terms:
-9 + -3x + 2x2 = -5 + 2x

Solving
-9 + -3x + 2x2 = -5 + 2x

Solving for variable 'x'.

Reorder the terms:
-9 + 5 + -3x + -2x + 2x2 = -5 + 2x + 5 + -2x

Combine like terms: -9 + 5 = -4
-4 + -3x + -2x + 2x2 = -5 + 2x + 5 + -2x

Combine like terms: -3x + -2x = -5x
-4 + -5x + 2x2 = -5 + 2x + 5 + -2x

Reorder the terms:
-4 + -5x + 2x2 = -5 + 5 + 2x + -2x

Combine like terms: -5 + 5 = 0
-4 + -5x + 2x2 = 0 + 2x + -2x
-4 + -5x + 2x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
-4 + -5x + 2x2 = 0

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

Divide each side by '2'.
-2 + -2.5x + x2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -2.5x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + -2.5x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -2.5x + x2 = 0 + 2
-2.5x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
-2.5x + x2 = 2

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = 2 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = 2 + 1.5625

Combine like terms: 2 + 1.5625 = 3.5625
1.5625 + -2.5x + x2 = 3.5625

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = 3.5625

Calculate the square root of the right side: 1.887458609

Break this problem into two subproblems by setting 
(x + -1.25) equal to 1.887458609 and -1.887458609.

Subproblem 1

x + -1.25 = 1.887458609 Simplifying x + -1.25 = 1.887458609 Reorder the terms: -1.25 + x = 1.887458609 Solving -1.25 + x = 1.887458609 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = 1.887458609 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 1.887458609 + 1.25 x = 1.887458609 + 1.25 Combine like terms: 1.887458609 + 1.25 = 3.137458609 x = 3.137458609 Simplifying x = 3.137458609

Subproblem 2

x + -1.25 = -1.887458609 Simplifying x + -1.25 = -1.887458609 Reorder the terms: -1.25 + x = -1.887458609 Solving -1.25 + x = -1.887458609 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = -1.887458609 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -1.887458609 + 1.25 x = -1.887458609 + 1.25 Combine like terms: -1.887458609 + 1.25 = -0.637458609 x = -0.637458609 Simplifying x = -0.637458609

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.137458609, -0.637458609}

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