1. a:b = c:d হলে, দেখাই যে,(i) (a²+b²):(a²-b²) = (ac+bd): (ac-bd)
Answer:
a/b=c/d=k(let)
a=bk,c=dk
LHS=(a^2+b^2)/(a^2-b^2)
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Answer:
a/b=c/d=k(let)
a=bk,c=dk
LHS=(a^2+b^2)/(a^2-b^2)