Show that (a-b), a, (a+b) form consecutive terms of an A.P.

1.	Show that (a-b), a, (a+b) form consecutive terms of an A.P.
Answer» D=a-(a-b)=a-a+b=b Another, D=a+b-a=b Hence ,common difference are same so it is in the form of an AP Subtract 2nd term from the 1st you will get b as the common diff. and again if you will subtract 2nd term from the 3rd term and again you will get b as the common diff.This shows that.........

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