Question

Will fan you!! Write each expression using the base only
A. 9^-8 x 9^-2 x 9^10
B. 5^4 x 5^7
C. 5^-5 x 5^7

Answer 1

when adding exponents i get 9^0 ....

Answer 2

really it is 9^10 / (9^8 * 9^2).... i took the negative exponents and put them in the denominator ...

Answer 3

i dont get it :/

Answer 4

any negtive exponent say 9^-8 is the same as writing 1/9^8

Answer 5

Alright i get that how do you get am answer though

Answer 6

simplifying it should be 9^10/ 9^10 which cancels 1/1 = 1 but can be written as 9^0 = 1

Answer 7

alright so B. would be 5^11?

Answer 8

yeah that's what i got

Answer 9

if u had (5^4)^3 u would mulitply them so it would be 5^12

Answer 10

sweet! and C im haveing a hard time with that one

Answer 11

if ur asked that (5^4)^3 another way is u can think of it as 5^4 *5^4 *5^4 then u rewrote it like the others so u can just add them now and u get the same answer 5^12

Answer 12

yeah i get that, but what about 5^-5 x 5^7

Answer 13

the expression can be rewritten as 5^7/5^5

Answer 14

so it's like 5 * 5 * 5 * 5 * 5 *5 *5 / 5 * 5 * 5 * 5 *5 so u cancel5 of them and u get 5^2 /1 so 5^ 2 if simplified would be 25

Answer 15

SO pretty much leave 5 alone then add^-5 and ^7 youd get ^2 then you have 5^2 then you add that?

Answer 16

yes, but the 5^2 is 5 * 5 = 25

Answer 17

when the problems deal with more variables then it's a lot easier to make a mistake if not rewritten and worked out in serveral steps

Answer 18

Yeah thats what i meant ha thanks!

Answer 19

it's cool glad i could help.

Answer 20

Wanna help a little more?

Answer 21

well i can try but i don't know it all

Answer 22

Its ok its pretty basic

Answer 23

A. (y^-3)^6
B. (-h^4)^5
C. (t^-4)^-9t^2
D. (5t^3)^-4

Answer 24

so( y^3)^6 is same thing as y ^3*6 = y^18

Answer 25

ok i see how you did that so B would be -h^20?

Answer 26

yes but if it were (-h^4)^4 it would be positive h^16

Answer 27

-1^5 remains negative lot of mistakes are here

Answer 28

so -1^4 would be positive

Answer 29

Alright

Answer 30

is question c written like that? (t^-4)^-9t^2?

Answer 31

yeah it is

Answer 32

so on part d can be rewrttten as 5^-4 * t^3*-4 then rewrtten as 1/ 5^4 t^12

Answer 33

can be simplified 1 / 625t^12

Answer 34

i actually get that haha

Answer 35

we didn't do C

Answer 36

so t^-4*-9t^2 = t^36t^2 i think that is the answer

Answer 37

abc

Answer 38

sorry