`A_(1)` and `A_(2)` are two vectors such that `|A_(1)| = 3 , |A_(2)| = 5` and `|A_(1)+A_(2)| = 5` the value of `(2A_(1)+3A_(2)).(2A_(1)-2A_(2))` isA. `(237)/(2)`B. `-123`C. `(-337)/(2)`D. `(337)/(2)`

`A_(1)` and `A_(2)` are two vectors such that `|A_(1)| = 3 , |A_(2)| =

1.	`A_(1)` and `A_(2)` are two vectors such that `\|A_(1)\| = 3 , \|A_(2)\| = 5` and `\|A_(1)+A_(2)\| = 5` the value of `(2A_(1)+3A_(2)).(2A_(1)-2A_(2))` isA. `(237)/(2)`B. `-123`C. `(-337)/(2)`D. `(337)/(2)`
Answer» Correct Answer - B

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`A_(1)` and `A_(2)` are two vectors such that `|A_(1)| = 3 , |A_(2)| = 5` and `|A_(1)+A_(2)| = 5` the value of `(2A_(1)+3A_(2)).(2A_(1)-2A_(2))` isA. `(237)/(2)`B. `-123`C. `(-337)/(2)`D. `(337)/(2)`

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