If vec(A)=2hat(i)+3hat(j)+4hat(k)and vec(B)=hat(i)+2hat(j)+3hat(k). The value of (2vec(A)-vec(B))*(vec(A)+2vec(B)) is

If vec(A)=2hat(i)+3hat(j)+4hat(k)and vec(B)=hat(i)+2hat(j)+3hat(k). Th

1.	If vec(A)=2hat(i)+3hat(j)+4hat(k)and vec(B)=hat(i)+2hat(j)+3hat(k). The value of (2vec(A)-vec(B))*(vec(A)+2vec(B)) is
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