Question

Let |A1| = 3, |A2|=5 and |A1 +A2|=5. The value of (2A1 +3A2).(3A1 -2A2) is :-
(A) -112.5
(B) -106.5
(C) -118.5
(D) -99.5

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Answer 1

Answer:

option a is the right answer to your Q

Answer 2

Answer:

(A) -112.5 is the answer of this question