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Q:
A) (x + y ) | B) (x - y) |
C) (x + y) / ( x - y) | D) (x -y) / ( x + y) |
Answer: D) (x -y) / ( x + y)
Explanation:
Explanation:
Let the third proportional to (x2-y2) and (x-y) be z. Then,
(x2-y2):(x-y)::(x-y):z
=>(x2-y2)*z=(x-y)2
=> z=(x-y)2(x2-y2)=(x-y)(x+y)