Question

(a+b)^-1 * (a^-1 + b^-1) = ?​

Answer 1

Answer:

1/ab

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

(1/a+b)(1/a+1/b)

(1/a+b)(b+a/ab)

b+a/a^2b+b^2a