Question

I can't understand this problem someone help me​

Answer 1

Answer:

-1/4 x -1/4 = 1/16

5^-3 x 5^-6 = 5^(-3 + -6)

= 5^-9

(6^-1 - 8^-1)^-1 + (2^-1 - 3^-1)

= (-6 -(-8))^-1 + -2 -(-3)

= 6-8+ -2 + 3

= -2 + 1

= -1

Answer 2

Answer:

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