math: factoring? |
 Jan 15 2006, 06:13 PM
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#1
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 Senior Member  Group: Member Posts: 4,357 Joined: Jul 2004 Member No: 28,115  |
How do you do some of these type of problems? It's my homework and I didn't really understand in class.
a^3-4a^2-a+4 or cx+cy+bx+by it's algebra 1 or algebra 2, btw. |
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Jan 16 2006, 11:40 AM
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#2
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 hi. call me linda. Group: Official Member Posts: 8,187 Joined: Feb 2004 Member No: 3,475 |
Ok, you first can separate the equation the way that Gigi said:
(a^3 - 4a^2) - (a - 4). Factor out the first part: a^2(a - 4) - (a - 4) You notice that (a - 4) is a common factor of a^2(a - 4) - (a - 4), so you factor that out and get (a^2 - 1)(a - 4). And, you can then further factor the first part into (a - 1)(a + 1). |
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Posts in this topic
Cake. math: factoring? Jan 15 2006, 06:13 PM
Lo Mein If you are just factoring, wouldn't it be
... Jan 15 2006, 06:23 PM gigiopolis Okay, for the cubic equation, have you guys learne... Jan 15 2006, 06:36 PM Cake. i don't mean to sound liek a bitch but i have ... Jan 15 2006, 10:49 PM gigiopolis ^ Er, I dont' know how that works...
about cx... Jan 15 2006, 10:56 PM wind&fire oops just like the one on the top.... ^how did you... Jan 16 2006, 10:38 PM gigiopolis ^ (a^2 - 1), I forgot what that's called but i... Jan 16 2006, 10:56 PM silver rain ^^ Yeah, it's called the difference of two squ... Jan 17 2006, 12:06 AM Cake. Thanks, you guys.
Yeah it's called the differ... Jan 17 2006, 05:37 PM
mzkandi Problem solved.
Topic Closed. Jan 17 2006, 10:15 PM |
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