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Answer :

Angstar4go
Fourth option.

We cannot divide by zero, so the denominator cannot equal zero.

0 = q^2 - 7q - 8
0 = (q - 8) * (q + 1)

0 = q - 8 when q = 8
0 = q + 1 when q = -1

So q cannot equal 8 or -1

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