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Post by Deleted on Oct 4, 2016 20:17:43 GMT -5
of what ? xD
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Post by Deleted on Oct 4, 2016 20:19:54 GMT -5
what exactly do you need help with? :3
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Post by Deleted on Oct 4, 2016 20:27:54 GMT -5
is there a joke that went over my head or...? xDD but seriously if you really need help, I'd totally help out!
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Post by Deleted on Oct 4, 2016 20:28:26 GMT -5
You sure? A quick snapshot and we could at least try, y'know? I'd also recommend office hours or talking to your professor if you can. Edit: Or maybe it was a joke?
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Post by Deleted on Oct 4, 2016 20:29:24 GMT -5
im so confused lol
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Post by Deleted on Oct 4, 2016 20:34:32 GMT -5
Okay so you know how to factor polynomials, right? The easiest way to start that problem is to factor first, cancel the terms, and then multiply as follows. I can step by step if you need.
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Post by The Noble Dragon on Oct 4, 2016 20:39:21 GMT -5
do you want a solution or explanation?
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Bleak
RN does not stand for Refreshments and Narcotics
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Post by Bleak on Oct 4, 2016 20:40:03 GMT -5
do you want a solution or explanation? Both would be appreciated greatly
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Post by Deleted on Oct 4, 2016 20:47:20 GMT -5
Bleak If you get swarmed with answers I'd suggest taking them one at a time, or just going to office hours. But if it helps, this is my process:
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Bleak
RN does not stand for Refreshments and Narcotics
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Post by Bleak on Oct 4, 2016 20:48:48 GMT -5
Bleak If you get swarmed with answers I'd suggest taking them one at a time, or just going to office hours. But if it helps, this is my process: i.imgur.com/RxmdegA.jpg height="450"; width="320" How'd you get x+3 on the top? I got x+7
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Post by Deleted on Oct 4, 2016 20:52:43 GMT -5
you've done FOIL right?
I would start with factoring each term
the 10x^2 + 37x + 7 first.
The easiest way to factor this out is as follows, and it works for any polynomial that has a number other than one in front of the x squared.
Step 1: Take the 10 from 10x^2 and the 7 at the end and multiply them together. It gives you 70.
Step 2: Find two factors of 70 that add up to equal the middle term 37. Factors of 70 would be 1 & 70, 2 & 35, 5 & 14, 7 & 10, and so forth. The factors here that add up to equal 37 would be 2 and 35.
Step 3: You rewrite the original trinomial as 10x^2 + 2x + 35x + 7. If you notice, we haven't changed the polynomial at all, we've just split the middle number.
Step 4: Take the terms and group them into two groups. In this case, it would be (10x^2 + 2x) and (35x + 7).
Step 5: Factor out these groups. End result would be 2x(5x + 1) and 7(5x + 1)
Step 6: Looking at the above groups, we can see two are the same. So you would use the (5x + 1) as one of the groups that is factored out. You would take the other two digits, the 2x and the 7, and add them, giving you (2x + 7)
The final factored out version would be (5x + 1)(2x + 7). You can foil it out and check to make sure it equals the original equations.
with me so far?
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Post by Deleted on Oct 4, 2016 20:55:39 GMT -5
Yeah, basically if you factor first and cross everything out, it makes the actual multiplying much cleaner and smoother
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Post by Deleted on Oct 4, 2016 20:58:09 GMT -5
I wrote it down wrong in the middle, but does that factoring make sense? Sorry I misled you.
You factor it down and cancel what you can out. I won't send any more examples lol.
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Bleak
RN does not stand for Refreshments and Narcotics
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Post by Bleak on Oct 4, 2016 20:59:54 GMT -5
I wrote it down wrong in the middle, but does that factoring make sense? Sorry I misled you. You factor it down and cancel what you can out. I won't send any more examples lol. It made some sense, I just forgot the AC Method
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Post by Deleted on Oct 4, 2016 20:59:56 GMT -5
The AC method saves lives I swear xD
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Post by The Noble Dragon on Oct 4, 2016 21:00:37 GMT -5
lol I was doing it a COMPLETELY different and more complicated way. Lol I was trying to make the denominators the same then muldply the numerators by what I used to get the demonimators. Made it way to complicated for me and I got too big of numbers. Whoops.
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Bleak
RN does not stand for Refreshments and Narcotics
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Post by Bleak on Oct 4, 2016 21:01:40 GMT -5
How would 9x 2- 4 be factored out?
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Post by The Noble Dragon on Oct 4, 2016 21:03:27 GMT -5
TO factor that the easiest way for me would be to use the quadratic formula. COmpleting the square would work if A = 0 but since A=9 then use the quadratic formula where b= 0
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Post by Deleted on Oct 4, 2016 21:03:44 GMT -5
How would 9x 2- 4 be factored out? well ultimately you can use the same method If you multiply 9 and -4, you get -36 the factors of -36 that equal 0 (because there is no middle term, so it would have to equal zero), would be -6 and 6 (because a negative and positive equal a negative so if you continue with the AC method, it would be 9x^2 - 6x + 6x - 4 (9x^2 - 6x) (6x - 4) 3x(3x - 2) 2(3x - 2) so (3x - 2) (3x + 2) if you foil, it would give you 9x^2 + 6x - 6x -4 or your original answer
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Post by Deleted on Oct 4, 2016 21:03:58 GMT -5
lol I was doing it a COMPLETELY different and more complicated way. Lol I was trying to make the denominators the same then muldply the numerators by what I used to get the demonimators. Made it way to complicated for me and I got too big of numbers. Whoops. I screwed it up too, we can be screw ups together. =D
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