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jma2001
#6
Jun25-05, 09:30 PM
PF Gold
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P: 89
The square brackets in the second line are redundant and may be part of what is confusing you. That is:

[tex]x[3(x-4)^2] = 3x(x-4)^2[/tex]

Now, rewrite the second line and see if it makes more sense.