oscar500 oscar500

18-11-2016
Mathematics

Answered

7z-9z is equivalent to wich of the following
a. -2
b. -2z
c. -2z2

Verified Answer :

KeaneNR KeaneNR

18-11-2016

When subtracting terms like these, you need to subtract the coefficients.
7-9=-2

But don't forget that z which means the answer is B. -2z

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