1.

3^(x)-3^(x-1)=18,find value of x^x

Answer»

hey mate

3^(X)-3^(x-1)=18,find VALUE of x^x

answer:

3^(x)-3^(x-1)=18,

3^x(1-1/3)=18

3^x (3-1)/3=18

3^x(2/3)=18

3^x=18×3/2

3^x= 9×3

=3×3×3

3^x = 3³

x= 3.

now,

x^x= 3³

= 27

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