Please tell

Asked by  | 25th Apr, 2009, 10:55: AM

Expert Answer:

Given:  AB

To Prove: (C - B) (C - A)

Let x (C-B)

so x C and x  B Since  AB so x  B ⇒ x A

So x  (C-A)

Hence, (C - B) (C - A)


Answered by  | 9th May, 2009, 12:14: PM

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