We have,

x

2/3

+x

1/3

−2=0

Let x

=y

then,

y

2

+y−2=0

+(2−1)y−2=0

+2y−1y−2=0

y(y+2)−1(y+2)=0

(y+2)(y−1)=0

If y+2=0, y−1=0

y=−2, y=1

=−2, x

=1

x=(−2)

3

, x=1

x=−8, x=1

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