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Simplifying
15X(-9) * X(-1) = 0
Reorder the terms for easier multiplication:
15 * -9 * -1X * X = 0
Multiply 15 * -9
-135 * -1X * X = 0
Multiply -135 * -1
135X * X = 0
Multiply X * X
135X2 = 0
Solving
135X2 = 0
Solving for variable 'X'.
Move all terms containing X to the left, all other terms to the right.
Divide each side by '135'.
X2 = 0
Simplifying
X2 = 0
Take the square root of each side:
X = {0}
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