Question

(i) d(PQ) + d(Q.R) = d(P.R)​

Answer 1

Answer:

d(PQ) + d(Q.R) = d(P.R)

LHS

d(PQ) + d(Q.R)

d(PQ+QR)

d(PR)

RHS

D(PR)

LHS=RHS

HENCE PROVED

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