math help am i right

[humakhan]

simplify:

(-8) ^ -5/3

i got the answer 13 1/3

am i right?


and this one also


1 / -16 ^ -3/4

i got the answer 1/12

am i right?

please do help thanks

 

[happy]

Hi Huma,

 

[humakhan]

hey happy long time right?

 

[happy]

yeah about 20 years. :roll:

 

[humakhan]

20 years wow its been that long
..joke
but i am sorry

 

[ting]

How did you get that.


It's the cube root of -8, raised to the power of -5.


cube root of -8 = -2


-2^-5 = -(1/2^5)

=-(1/32)

 

[humakhan]

oh i get it
yeah but when i did that the calcu gave me an error.........

thanks for making me understand it

 

[Denis]

I was told not long ago to use PM for private conversations.

 

[humakhan]

ya our bad
for got

 

[happy]