Question

Evaluate the following expression.
1/5^-2

is it 1/25?

Answer 1

@waterineyes

Answer 2

Firstly what the question is:

\[\frac{1}{5^{-2}}\] ??

Answer 3

yeah...

Answer 4

See in this case we use the following concept:

\[\large \frac{1}{x^{-a}} = x^a\]

Can you do it now??

Answer 5

so 1/25 is right. right??

Answer 6

No..

Look the formula clearly..

Answer 7

25?

Answer 8

Absolutely correct..

Well done..

Answer 9

thank you.. can you help me with 6^-3 too? is it 216?

Answer 10

or is it 1/216?

Answer 11

second one..

When you have negative powers just take the reciprocal..

Answer 12

ok.. how about 153^0?? is it 1?

Answer 13

Anything raised to the power is 1..

except \(0^0\) it is not defined..

Answer 14

Yes it is 1...

Answer 15

Anything raised to the power 0 is 1..

except \(0^0\) it is not defined..

Answer 16

how about (-6)^-2? sorry...

Answer 17

36?

Answer 18

it can be written as: \(1/(-6)^2\)

Answer 19

so is it -1/36?

Answer 20

NO..

1/36

Answer 21

sorry.. real last question!! Evaluate m0 - n2 for m = 2 and n = -1.
so its 2^0-(-n)^2.. i dont get this

Answer 22

\(2^0 - (-1)^2 \implies 1- (-1)^2 \implies 1- (1) \implies 0\)

Answer 23

huh? so its 0?

Answer 24

Yes..

Answer 25

alright thank you so much~!!!!!!!!!!!11

Answer 26

Welcome dear..