The value of (2 i+3 j-5 k) (i+j+k) is - Vidyadip

MCQ

The value of $(2 \hat{i}+3 \hat{j}-5 \hat{k}) \cdot(\hat{i}+\hat{j}+\hat{k})$ is

A
0
B
-10
C
$\sqrt{38}$
D
15

✓

Answer

self

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