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(z - 2) + 0 = z - 2State the property illustrated and justify your reason

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The key hint comes from the zero. It could be either the Additive identity of zero or the Multiplicative identity of zero.

Since we have a + , i'll go for additive identity. The property simply says that if you add zero to anything, your result is what you started with. Since we have z- 2 as a result, and this is what was added to zero, this reinforces our conclusion.