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If a^2+b^2=169, and ab=60,(a succ b) the...

If `a^2+b^2=169`, and ab=60,`(a succ b)` then what is the value of `(a^2-b^2)` :
यदि `a^2+b^2=169` है और ab=60,`(a succ b)` है, तो `(a^2-b^2)` का मान क्या होगा ?

A

149

B

129

C

119

D

139

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