(X+1)(x+1)-9=0

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Solution for (X+1)(x+1)-9=0 equation:


Simplifying
(X + 1)(x + 1) + -9 = 0

Reorder the terms:
(1 + X)(x + 1) + -9 = 0

Reorder the terms:
(1 + X)(1 + x) + -9 = 0

Multiply (1 + X) * (1 + x)
(1(1 + x) + X(1 + x)) + -9 = 0
((1 * 1 + x * 1) + X(1 + x)) + -9 = 0
((1 + 1x) + X(1 + x)) + -9 = 0
(1 + 1x + (1 * X + x * X)) + -9 = 0
(1 + 1x + (1X + xX)) + -9 = 0

Reorder the terms:
(1 + 1X + 1x + xX) + -9 = 0
(1 + 1X + 1x + xX) + -9 = 0

Reorder the terms:
1 + -9 + 1X + 1x + xX = 0

Combine like terms: 1 + -9 = -8
-8 + 1X + 1x + xX = 0

Solving
-8 + 1X + 1x + xX = 0

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '8' to each side of the equation.
-8 + 1X + 1x + 8 + xX = 0 + 8

Reorder the terms:
-8 + 8 + 1X + 1x + xX = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 1X + 1x + xX = 0 + 8
1X + 1x + xX = 0 + 8

Combine like terms: 0 + 8 = 8
1X + 1x + xX = 8

Add '-1x' to each side of the equation.
1X + 1x + -1x + xX = 8 + -1x

Combine like terms: 1x + -1x = 0
1X + 0 + xX = 8 + -1x
1X + xX = 8 + -1x

Reorder the terms:
-8 + 1X + x + xX = 8 + -1x + -8 + x

Reorder the terms:
-8 + 1X + x + xX = 8 + -8 + -1x + x

Combine like terms: 8 + -8 = 0
-8 + 1X + x + xX = 0 + -1x + x
-8 + 1X + x + xX = -1x + x

Combine like terms: -1x + x = 0
-8 + 1X + x + xX = 0

The solution to this equation could not be determined.

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