(x+3)(x+2)=39

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Solution for (x+3)(x+2)=39 equation:


Simplifying
(x + 3)(x + 2) = 39

Reorder the terms:
(3 + x)(x + 2) = 39

Reorder the terms:
(3 + x)(2 + x) = 39

Multiply (3 + x) * (2 + x)
(3(2 + x) + x(2 + x)) = 39
((2 * 3 + x * 3) + x(2 + x)) = 39
((6 + 3x) + x(2 + x)) = 39
(6 + 3x + (2 * x + x * x)) = 39
(6 + 3x + (2x + x2)) = 39

Combine like terms: 3x + 2x = 5x
(6 + 5x + x2) = 39

Solving
6 + 5x + x2 = 39

Solving for variable 'x'.

Reorder the terms:
6 + -39 + 5x + x2 = 39 + -39

Combine like terms: 6 + -39 = -33
-33 + 5x + x2 = 39 + -39

Combine like terms: 39 + -39 = 0
-33 + 5x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '33' to each side of the equation.
-33 + 5x + 33 + x2 = 0 + 33

Reorder the terms:
-33 + 33 + 5x + x2 = 0 + 33

Combine like terms: -33 + 33 = 0
0 + 5x + x2 = 0 + 33
5x + x2 = 0 + 33

Combine like terms: 0 + 33 = 33
5x + x2 = 33

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = 33 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 33 + 6.25

Combine like terms: 33 + 6.25 = 39.25
6.25 + 5x + x2 = 39.25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 39.25

Calculate the square root of the right side: 6.264982043

Break this problem into two subproblems by setting 
(x + 2.5) equal to 6.264982043 and -6.264982043.

Subproblem 1

x + 2.5 = 6.264982043 Simplifying x + 2.5 = 6.264982043 Reorder the terms: 2.5 + x = 6.264982043 Solving 2.5 + x = 6.264982043 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 6.264982043 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 6.264982043 + -2.5 x = 6.264982043 + -2.5 Combine like terms: 6.264982043 + -2.5 = 3.764982043 x = 3.764982043 Simplifying x = 3.764982043

Subproblem 2

x + 2.5 = -6.264982043 Simplifying x + 2.5 = -6.264982043 Reorder the terms: 2.5 + x = -6.264982043 Solving 2.5 + x = -6.264982043 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -6.264982043 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -6.264982043 + -2.5 x = -6.264982043 + -2.5 Combine like terms: -6.264982043 + -2.5 = -8.764982043 x = -8.764982043 Simplifying x = -8.764982043

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.764982043, -8.764982043}

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