What is the correct answer ? Please explain !!

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asked Mar 21, 2019 162k views

1 Answer

Alfonso Presa · Answer 1 · 2019-03-27T03:00:22+0000

the correct answer is D because the z cancels each other out

think of it this way: -1z +1z=0
place a number in front to help you remeber there is a 1 in front of the variable

What is the correct answer ? Please explain !!

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