Okay, this problem is making me crazy. Factory completely: 21a^2*b^4 + 14ab -42a. I've gotten it as far as 7a(3ab^4 + 2b - 6) but I can't seem to get it any farther and my homework program says that isn't good enough.

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anonymous · Answer

I've tried going through the stuff in the book but there are no example problems like this at all.

tkhunny · Answer

You have it.  Must be an input problem.  You can't fix it if it isn't broken.

anonymous · Answer

Okay, thank you, that's what I've been told by everyone else I've talked too as well.

tkhunny · Answer

Online mathematics education still has quite a ways to go.  The automated checking is still not working very well.

anonymous · Answer

So I've discovered...