1.

`(2a+b)^(2)-(2a-b)^(2)` का मान कितना है?A. `8ab`B. `-8ab`C. `8a^(2)+2b^(2)`D. `8a^(2)-2b^(2)`

Answer» Correct Answer - A
`(2a+b)^(2)-(2a-b)^(2)`
`implies 4a^(2)+b^(2)+4ab-4a^(2)-b^(2)+4ab`
`=8ab`


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