Simplify the expression

(3)^10 (3)^-9
A; 3
B; 1/3
C;9^-90 (my answer)
D 9
Am i correct?

10 answers

Well, if you were to work it it it would be A(3).
You usually do not combine the terms as in letter C(9^90).
I would go with letter A.😀
Sorry first line is supposed to be: Well if you were to work it out, it would...
Oh yeah that makes sense. Thanks for the help!!!
umm...how do you get that answer as three though? mabye i can use that same method in the future
You keep the base and add the exponents.

base is 3 and exponents add to 1 so 3^1= 3
9^-90 would be (3*3)^(10 * -9)
Better review the properties of exponents some more.
Anyone have all the test answers?
who has the answer
1.a
2.a
3.c
4.?
5.a
6.?
7.c
8.a
9.a
10.c
11.a
12.a
13.b
14.?
15.c
16.b
17.yes a
18.no a
19.a
20.?
21.a
22.?
23.b
24.?
fhgwherbgh got me a 50% Thanks a lot. Do NOT true him/her.