(X+3)(X+2)-14=0

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Solution for (X+3)(X+2)-14=0 equation:


Simplifying
(X + 3)(X + 2) + -14 = 0

Reorder the terms:
(3 + X)(X + 2) + -14 = 0

Reorder the terms:
(3 + X)(2 + X) + -14 = 0

Multiply (3 + X) * (2 + X)
(3(2 + X) + X(2 + X)) + -14 = 0
((2 * 3 + X * 3) + X(2 + X)) + -14 = 0
((6 + 3X) + X(2 + X)) + -14 = 0
(6 + 3X + (2 * X + X * X)) + -14 = 0
(6 + 3X + (2X + X2)) + -14 = 0

Combine like terms: 3X + 2X = 5X
(6 + 5X + X2) + -14 = 0

Reorder the terms:
6 + -14 + 5X + X2 = 0

Combine like terms: 6 + -14 = -8
-8 + 5X + X2 = 0

Solving
-8 + 5X + X2 = 0

Solving for variable 'X'.

Begin completing the square.

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + 5X + 8 + X2 = 0 + 8

Reorder the terms:
-8 + 8 + 5X + X2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 5X + X2 = 0 + 8
5X + X2 = 0 + 8

Combine like terms: 0 + 8 = 8
5X + X2 = 8

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 = 8 + 6.25

Reorder the terms:
6.25 + 5X + X2 = 8 + 6.25

Combine like terms: 8 + 6.25 = 14.25
6.25 + 5X + X2 = 14.25

Factor a perfect square on the left side:
(X + 2.5)(X + 2.5) = 14.25

Calculate the square root of the right side: 3.774917218

Break this problem into two subproblems by setting 
(X + 2.5) equal to 3.774917218 and -3.774917218.

Subproblem 1

X + 2.5 = 3.774917218 Simplifying X + 2.5 = 3.774917218 Reorder the terms: 2.5 + X = 3.774917218 Solving 2.5 + X = 3.774917218 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 = 3.774917218 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + X = 3.774917218 + -2.5 X = 3.774917218 + -2.5 Combine like terms: 3.774917218 + -2.5 = 1.274917218 X = 1.274917218 Simplifying X = 1.274917218

Subproblem 2

X + 2.5 = -3.774917218 Simplifying X + 2.5 = -3.774917218 Reorder the terms: 2.5 + X = -3.774917218 Solving 2.5 + X = -3.774917218 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 = -3.774917218 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + X = -3.774917218 + -2.5 X = -3.774917218 + -2.5 Combine like terms: -3.774917218 + -2.5 = -6.274917218 X = -6.274917218 Simplifying X = -6.274917218

Solution

The solution to the problem is based on the solutions from the subproblems. X = {1.274917218, -6.274917218}

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