Question

Select the correct difference.

-3z^7 - (-5z^7)

a) 2z7
b) 8z14
c) -2z7
d) 2z

Answer 1

That's the same thing as saying -3z^7+5z^7 and you can treat z^7 as a variable, so just add the coefficients and put z^7 at at the end.

Answer 2

so the answer is c?

Answer 3

how did you get that?

Answer 4

sorry i meant a

Answer 5

yes