EXPANSIONS
Asked by | 12th Jul, 2009, 05:28: AM
Expert Answer:
(x-3) (x+7) (x-4)
[x2 +7x -3x -21] (x-4)
[x2 +4x -21] (x-4)
x3 +4x2 -21x -4x2 -16x +84
x3 -37x +84
4x2 & -4x2 get cancelled therefore 0 is the coefficient of x2 term
Answered by | 12th Jul, 2009, 10:21: AM
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