Question

What is the value of the expression?

4^3 • 4^−5

A.
4^−15

B.
4^−2

C.
4^2

D.
4^8

Answer 1

@Michele_Laino

Answer 2

4^(3-5)

Answer 3

4^-2

Answer 4

a^b*a^c=a(b+c)
(a^b)^c=a^bc

Answer 5

\[4^{3}*4^{-5}=4^{(3-5)}=4^{-2}=\frac{ 1 }{ 4^{2} }=\frac{ 1 }{ 16 }\]

Answer 6

4^-2

Answer 7

so what letter is it

Answer 8

B

Answer 9

please, @brucebaner are all my step clear for you?

Answer 10

what about you @saifoo.khan

Answer 11

I'd go with @Michele_Laino .

Answer 12

so its B

Answer 13

sorry please, I want to know if my reasoning is clear for you!

Answer 14

yes

Answer 15

ok! then what properties of power I applied before?

Answer 16

yes i your reasoning is clear for me

Answer 17

ok! please solve this little test and after that I will give you your answer.
evaluate this, please:
\[\frac{ 5^{-2} }{ 5^{-3} }\]

Answer 18

5^-5

Answer 19

please, retry!

Answer 20

please note that:
\[\frac{ 1 }{ 2^{-9}}=2^{9}\]

Answer 21

that's right!
your answer is B.

Answer 22

thx

Answer 23

@brucebaner sorry where is your correct answer?