As soon as you start to expand 8! you see it is 8x7!
Thus your expression becomes
8(7!) - 5(7!)
and now you can common factor out the 7!
So what do you think?
Factorize 8!-5(7!)
A.4!7!
B.3-7!
C.4 x 7!
D.3! X 7!?
1 answer
1 answer