Question

solve this problem please of std 8
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Answer 1

Answer:

a) (1/3 ^-2 ) - (1/2 ^-2) ] ÷ 3^-2

》 ( 3^2 - 9^2 ) ÷ 1/3^2

》 ( 9 - 81 ) × 3^2

》 -72 × 9 = -648

b) ( 5/8^-3 × 8/5^-5 )

》 5/8^-3 × 5/8^5

》 (5/8)^-3+5

》 (5/8)^2 = 25/64

Please vote !!!