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Laplace Expansion

  1. Oct 25, 2004 #1
    how can i solve this determinant
    if detA= a b c
    p q r = -1
    x y z

    compute det B -2a -2b -2c
    2p+x 2q+y 2r+z
    3x 3y 3z

    i want to kno what i should do to reach to the point of multiplying the two det,( ie, det A(-1) x det b)
  2. jcsd
  3. Oct 25, 2004 #2
    I GOT IT, pretty easy question, lol, so dumb
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