The tern to be added to 121 a^(2) + 64 ...

The tern to be added to `121 a^(2) + 64 b^(2)` to make a perfect square is

A

176 ab

B

`276 a ^(2)b `

C

`178 ab`

D

`188 b ^(2) a`

Verified by Experts

The correct Answer is:

A

`121 a ^(2) + 64 b ^(2)`
`= (11a ) ^(2) + ( 8b) ^(2)`
अत: `121 a ^(2) + 64 b ^(2)` को पूर्ण वर्ग बनाने के लिए `2 xx 11 a xx 8b = 176 ab` जोड़ना होगा।

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