Math, asked by eishaan2, 1 year ago

bracketed 4 power minus 1 + 8 power minus 1 bracket close multiply bracket 3.2 power minus 1 evaluate

Answers

Answered by mysticd
0
Hi ,

( 4^-1 + 8^-1 )( 3.2 )^-1

= [ 1/4 + 1/8 ] × ( 32/10 ) ^-1

[ Since a^-n = 1/aⁿ ]

= [ ( 2 + 1 ) /8 ] × ( 10/ 32 )

[ Since ( a/b )^-n = ( b/a )ⁿ ]

= ( 3/8 ) ( 10/32 )

= ( 3 × 10 ) / ( 8 × 32 )

= ( 3 × 2 × 5 ) / ( 2 × 4 × 32 )

After cancellation ,

= 15/128

I hope this helps you.

: )
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