Correct Answer: -1/a
Explanation:
Given equation is
a-1 - 1
Apply the law of Fractional Exponents and Laws of Exponents
x-y = 1/xy
⇒ a-1 - 1 = 1/a - 1
⇒ a-1 - 1 = (1 - a)/a
Now divide by a - 1 in above equation,
⇒ ( a-1 - 1 ) ÷ (a - 1) = (1 - a)/a ÷ (a - 1)
⇒ ( a-1 - 1 ) ÷ (a - 1) = (1 - a)/a x 1/ (a - 1)
⇒ ( a-1 - 1 ) ÷ (a - 1) = -1x (a - 1)/a x 1/ (a - 1)
⇒ ( a-1 - 1 ) ÷ (a - 1) = -1/a
∴ Required quotient = -1/a.
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