Question 69829
YOU DID VERY WELL GOOD A SLIGHT ERROR IS THERE..SEE MY COMMENTS BELOW
    Can u please check & tell me if my answer is wrong or not?
    Given: C= (matrix(2,2,-3,4,2,5))
    B= (matrix(3,2,3,-6,5,7,-4,6))
    Question: 3CB
    What i've tried: 3(matrix(2,2,-3,4,2,5))* (matrix(3,2,3,-6,5,7,-4,6))
SEE 
    consider them as 4 vertically aligned matrix symbols:
    = 3[-3 4]*[3 -6 5]
    [2 5] [7 -4 6]
    = 3[ (-3*3+4*7) (-3*-6+4*-4) (-3*5+4*6) ]..LAST ONE =-3*6+4*6=6
    [ (2*3+5*7) (2*-6+5*-4) (2*5+5*6) ].....LAST ONE =2*6+5*6=42
    = 3 [ (-9+28) (18-16) (-15+24) ]...-18+24=6
    [ (6+35) (-12-20) (10+30) ].....12+30=42
    = 3 [19 2 8].........6
    [41 -32 40]................42
    = [ 3*19 3*2 3*8 ]...............3*6
    [ 3*41 3*-32 3*40]............3*42
    = [57 6 24]..................57...6....18
    [123 -96 120]................123.-96...126
    Final result- (matrix(3,2,57,6,24,123,-96,120))

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