Plz answeras fast as possible

1.	Plz answeras fast as possible
Answer» ANSWER= b. A=3i+j+2k B=2i-2j+4k AxB= i((14)-(2(-2)))+j((22)-(34))+K((3(-2))-(12)) = i(4+4)+j(4-12)+k(-6-2) =8i-8j-8k Magnitude=√8²+8²+8² =√64+64+64 =√192 =8√3

Answer»

ANSWER= b.

A=3i+j+2k

B=2i-2j+4k

AxB= i((1*4)-(2*(-2)))+j((2*2)-(3*4))+K((3*(-2))-(1*2))

= i(4+4)+j(4-12)+k(-6-2)

=8i-8j-8k

Magnitude=√8²+8²+8²

=√64+64+64

=√192

=8√3

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