Question

Value of (p+q)^-1(p^-1+q^-1)

Answer 1

Answer:

1/pq

Step-by-step explanation:

(p+q)-¹ (p-¹+q-¹)

(1/p+q)(1/p+1/q)

1/p+q×q+p/pq

1/p+q×p+q/pq

1/pq