Question

I have a doubt ...... pls help me if u can

Answer 1

hope it helps........

Answer 2

Sol :  Given , z = 0.064

                     z = 64 / 1000

                     z = 8 / 125.

Now , { 1 / z )^( 1 / 3 )

 By putting the value of z ,

            1
 = {  ------------- }^( 1 / 3 )
          8 / 125

 = { 125 / 8 }^( 1 / 3 )

 = { 5³ / 2³ }^( 1 / 3 )

By using identity , { a^m / b^m = ( a / b )^m }

 =  [ { 5 / 2 }³ ] ^( 1 /3 )

By using identity , { ( a^m )^ n = a ^ ( m * n ) }

 = { 5 / 2 }^ ( 3 * 1 / 3 )

 = { 5 / 2 }^1

 = 5 / 2.

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