Here's the question you clicked on:
tori777
find the greatest common factor for the group of terms -30a^4,5a^5 The greatest common factor is?
Is this the answer? -5a^4???
you will not use the negative sign. rest is correct.
Yes it is! But because you have a negative on the outside term make sure that your signs all correlate when multiplied back out!
NO! negative isn't needed.
Saifoo is right!, even \((-5,-25)=5\)