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If Delta=|(a,b,c),(x,y,z),(p,q,r)|,"then...

If `Delta=|(a,b,c),(x,y,z),(p,q,r)|,"then"|(ka,kb,kc),(kx,ky,kz),(kp,kq,kr)|`is

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Without expanding prove that |(a,b,c),(x,y,z),(p,q,r)| = |(y,b,q),(x,a,p),(z,c,r)|

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If A=[(a,b,c),(x,y,z),(p,q,r)] and B=[(q,-b,y),(-p,a,-x),(r,-c,z)] then (A) |A|=|B| (B) |A|=-|B| (C) |A|=2|B| (D) none of these