E
Editor
Sep 18, 2022
If c=2i+j+k and d=-i+4j+2k, then [c-d]=
Difficulty: Easy
A:
$\sqrt{7}$
B:
$\sqrt{41}$
C:
$\sqrt{19}$
D:
$2\sqrt{7}$
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ID: 63273dbaca83163ac3a132bf