Question

SIMPLIFU AND EXPRESS THE RATIONAL NUMBER (5/7)POWER 4/(5/7) POWER 2​

Answer 1

( 5 ) ⁴ ÷ ( 5 ) ²

( 7 )        ( 7 )

→ ( 5 ) ⁴⁻²    { mᵃ ÷ mᵇ = mᵃ⁻ᵇ }

   ( 7 )

→ ( 5 ) ²

   ( 7 )

→ ( 5² )  { ( m ) ᵃ = ( mᵃ ) }

   ( 7² )    {  ( n )          ( nᵃ )  }

→ 25

   49

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