CfJr
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| Joined: 28 Apr 2011 |
| Total Posts: 33139 |
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| 12 Oct 2012 04:27 PM |
x²+8x+12
Show ur work. It b factorising btw. |
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| 12 Oct 2012 04:29 PM |
524
im just guessing because i dont think on the weekends |
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CfJr
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| Joined: 28 Apr 2011 |
| Total Posts: 33139 |
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| 12 Oct 2012 04:31 PM |
I gave u time.
x²+8x+12
x---->12} + 6x +---->8} + 2x
x²+6x+2x+12 x(x+6)+2(x+6)
= (x+2) (x+6)
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NilPirate
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| Joined: 31 Jul 2010 |
| Total Posts: 3077 |
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| 12 Oct 2012 04:31 PM |
x^2+8x+12 = 0
Let's break it up. Numbers must add to 8, and multiply to 12... 6 and 2.
(x+6)(x+2) = 0 Assume one is equal to 0 to get result.
x + 6 = 0 x + 2 = 0
x = -6, -2
There's your answer. |
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CfJr
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| Joined: 28 Apr 2011 |
| Total Posts: 33139 |
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NilPirate
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| Joined: 31 Jul 2010 |
| Total Posts: 3077 |
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| 12 Oct 2012 04:35 PM |
x²+8x+12=0
-2^2 + 8*-2 + 12 = 0 4 -16 + 12 = 0 -12 + 12 = 0 0 = 0
I can do this all day, son.
-6^2 + 8*-6 + 12 = 0 36 - 48 + 12 = 0 -12 + 12 = 0 0 = 0
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CfJr
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| Joined: 28 Apr 2011 |
| Total Posts: 33139 |
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| 12 Oct 2012 04:35 PM |
| You're just making up sums bro ._. |
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NilPirate
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| Joined: 31 Jul 2010 |
| Total Posts: 3077 |
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| 12 Oct 2012 04:36 PM |
| I literally just plugged it in. If it ends up as true, that means you have the right numbers for x. Have you even done factoring before? |
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Masterlet
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| Joined: 30 Jun 2011 |
| Total Posts: 648 |
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| 12 Oct 2012 04:40 PM |
| I should learn this because I'm in 6th grade. :P |
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XC6
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| Joined: 28 Jun 2012 |
| Total Posts: 9179 |
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| 12 Oct 2012 04:40 PM |
Can I solve this?
Should've asked me a year ago. I've done factorising and I've forgotten (it's entirely useless). |
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jedi8527
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| Joined: 02 Jul 2009 |
| Total Posts: 5145 |
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zgirl341
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| Joined: 26 Apr 2009 |
| Total Posts: 9122 |
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| 12 Oct 2012 04:44 PM |
what number is x
sorry i hate math and i don't pay attention |
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Masterlet
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| Joined: 30 Jun 2011 |
| Total Posts: 648 |
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Masterlet
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| Joined: 30 Jun 2011 |
| Total Posts: 648 |
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| 12 Oct 2012 05:05 PM |
@CfJr I will pm you the answer which is probably wrong because a person wanted to know the answer and the person that wanted to know the answer was... ZGIRL341!!!
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