(X-3)(X+2)-1=0

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Solution for (X-3)(X+2)-1=0 equation:


Simplifying
(X + -3)(X + 2) + -1 = 0

Reorder the terms:
(-3 + X)(X + 2) + -1 = 0

Reorder the terms:
(-3 + X)(2 + X) + -1 = 0

Multiply (-3 + X) * (2 + X)
(-3(2 + X) + X(2 + X)) + -1 = 0
((2 * -3 + X * -3) + X(2 + X)) + -1 = 0
((-6 + -3X) + X(2 + X)) + -1 = 0
(-6 + -3X + (2 * X + X * X)) + -1 = 0
(-6 + -3X + (2X + X2)) + -1 = 0

Combine like terms: -3X + 2X = -1X
(-6 + -1X + X2) + -1 = 0

Reorder the terms:
-6 + -1 + -1X + X2 = 0

Combine like terms: -6 + -1 = -7
-7 + -1X + X2 = 0

Solving
-7 + -1X + X2 = 0

Solving for variable 'X'.

Begin completing the square.

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -1X + 7 + X2 = 0 + 7

Reorder the terms:
-7 + 7 + -1X + X2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -1X + X2 = 0 + 7
-1X + X2 = 0 + 7

Combine like terms: 0 + 7 = 7
-1X + X2 = 7

The X term is -1X.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1X + 0.25 + X2 = 7 + 0.25

Reorder the terms:
0.25 + -1X + X2 = 7 + 0.25

Combine like terms: 7 + 0.25 = 7.25
0.25 + -1X + X2 = 7.25

Factor a perfect square on the left side:
(X + -0.5)(X + -0.5) = 7.25

Calculate the square root of the right side: 2.692582404

Break this problem into two subproblems by setting 
(X + -0.5) equal to 2.692582404 and -2.692582404.

Subproblem 1

X + -0.5 = 2.692582404 Simplifying X + -0.5 = 2.692582404 Reorder the terms: -0.5 + X = 2.692582404 Solving -0.5 + X = 2.692582404 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + X = 2.692582404 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + X = 2.692582404 + 0.5 X = 2.692582404 + 0.5 Combine like terms: 2.692582404 + 0.5 = 3.192582404 X = 3.192582404 Simplifying X = 3.192582404

Subproblem 2

X + -0.5 = -2.692582404 Simplifying X + -0.5 = -2.692582404 Reorder the terms: -0.5 + X = -2.692582404 Solving -0.5 + X = -2.692582404 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + X = -2.692582404 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + X = -2.692582404 + 0.5 X = -2.692582404 + 0.5 Combine like terms: -2.692582404 + 0.5 = -2.192582404 X = -2.192582404 Simplifying X = -2.192582404

Solution

The solution to the problem is based on the solutions from the subproblems. X = {3.192582404, -2.192582404}

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