(X+9y)(-x-9y)=

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


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

Multiply (X + 9y) * (-1x + -9y)
(X(-1x + -9y) + 9y * (-1x + -9y)) = 0
((-1x * X + -9y * X) + 9y * (-1x + -9y)) = 0
((-1xX + -9yX) + 9y * (-1x + -9y)) = 0
(-1xX + -9yX + (-1x * 9y + -9y * 9y)) = 0
(-1xX + -9yX + (-9xy + -81y2)) = 0

Reorder the terms:
(-1xX + -9xy + -9yX + -81y2) = 0
(-1xX + -9xy + -9yX + -81y2) = 0

Solving
-1xX + -9xy + -9yX + -81y2 = 0

Solving for variable 'x'.

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

Add '9yX' to each side of the equation.
-1xX + -9xy + -9yX + 9yX + -81y2 = 0 + 9yX

Combine like terms: -9yX + 9yX = 0
-1xX + -9xy + 0 + -81y2 = 0 + 9yX
-1xX + -9xy + -81y2 = 0 + 9yX
Remove the zero:
-1xX + -9xy + -81y2 = 9yX

Add '81y2' to each side of the equation.
-1xX + -9xy + -81y2 + 81y2 = 9yX + 81y2

Combine like terms: -81y2 + 81y2 = 0
-1xX + -9xy + 0 = 9yX + 81y2
-1xX + -9xy = 9yX + 81y2

Reorder the terms:
-1xX + -9xy + -9yX + -81y2 = 9yX + -9yX + 81y2 + -81y2

Combine like terms: 9yX + -9yX = 0
-1xX + -9xy + -9yX + -81y2 = 0 + 81y2 + -81y2
-1xX + -9xy + -9yX + -81y2 = 81y2 + -81y2

Combine like terms: 81y2 + -81y2 = 0
-1xX + -9xy + -9yX + -81y2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(xX + 9xy + 9yX + 81y2) = 0

Ignore the factor -1.

Subproblem 1
Set the factor '(xX + 9xy + 9yX + 81y2)' equal to zero and attempt to solve:

Simplifying
xX + 9xy + 9yX + 81y2 = 0

Solving
xX + 9xy + 9yX + 81y2 = 0

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

Add '-9yX' to each side of the equation.
xX + 9xy + 9yX + -9yX + 81y2 = 0 + -9yX

Combine like terms: 9yX + -9yX = 0
xX + 9xy + 0 + 81y2 = 0 + -9yX
xX + 9xy + 81y2 = 0 + -9yX
Remove the zero:
xX + 9xy + 81y2 = -9yX

Add '-81y2' to each side of the equation.
xX + 9xy + 81y2 + -81y2 = -9yX + -81y2

Combine like terms: 81y2 + -81y2 = 0
xX + 9xy + 0 = -9yX + -81y2
xX + 9xy = -9yX + -81y2

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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