I don't Clearly understand your question but I think it is 0.428571
The greatest common factor is...
5a
I got this by...
10: 1,2,5,10
15: 1,3,5,15
25: 1,5,25
The GCF is 5 for the numbers.
For the a's, it's...
a: a
a^3: a×a×a
a^6: a×a×a×a×a×a
The GFC is a.
Then multiple 5 and a, and you get...
5a
The GFC is...
5a
Hope this helps!
Here are the answers: they are in red
HELLO DEAR,
GIVEN:-
8cos²x + cosx - 9
8cos²x + 9cosx - 8cosx - 9
cosx(8cosx + 9) - (8cosx + 9)
(cosx - 1)(8cosx + 9)
I HOPE ITS HELP YOU DEAR,
THANKS