Math, asked by swayamsritanayak, 5 hours ago

solve this question fast​

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Answered by DEBOBROTABHATTACHARY
0

a . (5^-1 ÷ 3^-1)^2

= (1/5 × 3)^2

= (3/5)^2

= 9/25 (ans.)

b . (4^-1 ÷ 7^-1)^-1 ÷ (3^-1 ÷ 7^-1)^-1

= (1/4 × 7)^-1 ÷ (1/3 × 7)^-1

= (7/4)^-1 ÷ (7/3)^-1

= 4/7 × 7/3

= 4/3 (ans.)

c . [(1/3)^-3 - (1/2)^-3] ÷ (1/4)^-2

= [(3)^3 - (2)^3] ÷ (4)^2

= (27 - 8) × 1/16

= 19/16

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