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|dw:1327286055825:dw|

(-8x^9)^1/3 =-2x^3

so you just take the square root of the nine

take the cube root of -8 that is -2 and the x power of 9 divided by 1/3 power=3

oh ok thank you

i mean multiplied by 1/3 or divided by 3

yw

so what do you do if it says the cubed root of say 2? what is that then?

ok cube root of 2=2^(1/3) if you use a calculator =1.2599

|dw:1327286991080:dw|

1.2599(1,2599)(1.2599)=1.2599^3 =2

|dw:1327287288675:dw|

a god example is cube root of -8 that is (-8)^1/3=-2
to check this (-2)x(-2)x(-2)=-8

if (-b)^1/3=-a
then (-a)^3=-b

right ok

good luck now