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Just checking something

3^1/3 = 1/3sqrt3 right? or wrong?

and -4^-2 = 2/-4 right?


oh also (5-sqrt3)^2

is the answer 28 + 10 sqrt3

????????????????????????????????????????????????????????????????????????????????????????????????????/
CrystalP
3^1/3 = 1/3sqrt3 right? or wrong?

and -4^-2 = 2/-4 right?


1) yes
2) 1/16 I think
Reply 2
Avatar for DAVE 101
DAVE 101
4
2) wrong, but girl in black had it right:

-4-2=1/-4²= 1/16
Reply 3
Avatar for CrystalP
CrystalP
OP
Oh good thanks you 2!
anyone help with the third one?
CrystalP
3^1/3 = 1/3sqrt3 right? or wrong?

and -4^-2 = 2/-4 right?


oh also (5-sqrt3)^2

is the answer 28 + 10 sqrt3

????????????????????????????????????????????????????????????????????????????????????????????????????/


No, its 28 - 10 sqrt 3 (when the symbols are different the result is negative, so its -5 sqrt 3 add -5 sqrt 3)
Reply 5
Avatar for CrystalP
CrystalP
OP
Oh brill thanks so much!
CrystalP
Oh brill thanks so much!


no problem :smile:
Reply 7
Avatar for -=Ky=-
-=Ky=-
*** 3^1/3 = 1/3sqrt3 right? or wrong? ***

so if i get what you saying

3 to the power of a third = 1 over 3x the square root of 3.......

----------------------------------------------
3 to the power of a third
is just the cube root of 3 aint it??

it only changes to a fraction when you have negative indices

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