KEAM 2022 Math Solved Paper

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Question : 113 of 120
 
Marks: +1, -0
If |
→
a
|
=10
and |
→
b
|
=5
, then the value of (
→
a
+2
→
b
)
â‹…(
→
a
−2
→
b
)
is equal to
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