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CBSE XII
>>
Math
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Vector Algebra
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Q)
Evaluate the product
(
3
→
a
−
5
→
b
)
⋅
(
2
→
a
+
7
→
b
)
(
A
)
6
|
→
a
|
2
+
35
|
→
b
|
2
+
11
→
a
.
→
b
(
B
)
6
|
→
a
|
2
−
35
|
→
b
|
2
−
31
→
a
.
→
b
(
C
)
6
|
→
a
|
2
−
35
|
→
b
|
2
+
31
→
a
.
→
b
(
D
)
6
|
→
a
|
2
−
35
|
→
b
|
2
+
11
→
a
.
→
b
Share
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