(2x-3)(x+2)=6

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Solution for (2x-3)(x+2)=6 equation:


Simplifying
(2x + -3)(x + 2) = 6

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

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

Multiply (-3 + 2x) * (2 + x)
(-3(2 + x) + 2x * (2 + x)) = 6
((2 * -3 + x * -3) + 2x * (2 + x)) = 6
((-6 + -3x) + 2x * (2 + x)) = 6
(-6 + -3x + (2 * 2x + x * 2x)) = 6
(-6 + -3x + (4x + 2x2)) = 6

Combine like terms: -3x + 4x = 1x
(-6 + 1x + 2x2) = 6

Solving
-6 + 1x + 2x2 = 6

Solving for variable 'x'.

Reorder the terms:
-6 + -6 + 1x + 2x2 = 6 + -6

Combine like terms: -6 + -6 = -12
-12 + 1x + 2x2 = 6 + -6

Combine like terms: 6 + -6 = 0
-12 + 1x + 2x2 = 0

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

Divide each side by '2'.
-6 + 0.5x + x2 = 0

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + 0.5x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + 0.5x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 0.5x + x2 = 0 + 6
0.5x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
0.5x + x2 = 6

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = 6 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = 6 + 0.0625

Combine like terms: 6 + 0.0625 = 6.0625
0.0625 + 0.5x + x2 = 6.0625

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = 6.0625

Calculate the square root of the right side: 2.46221445

Break this problem into two subproblems by setting 
(x + 0.25) equal to 2.46221445 and -2.46221445.

Subproblem 1

x + 0.25 = 2.46221445 Simplifying x + 0.25 = 2.46221445 Reorder the terms: 0.25 + x = 2.46221445 Solving 0.25 + x = 2.46221445 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = 2.46221445 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 2.46221445 + -0.25 x = 2.46221445 + -0.25 Combine like terms: 2.46221445 + -0.25 = 2.21221445 x = 2.21221445 Simplifying x = 2.21221445

Subproblem 2

x + 0.25 = -2.46221445 Simplifying x + 0.25 = -2.46221445 Reorder the terms: 0.25 + x = -2.46221445 Solving 0.25 + x = -2.46221445 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = -2.46221445 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -2.46221445 + -0.25 x = -2.46221445 + -0.25 Combine like terms: -2.46221445 + -0.25 = -2.71221445 x = -2.71221445 Simplifying x = -2.71221445

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.21221445, -2.71221445}

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