rekawamo
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Post by rekawamo on Mar 13, 2004 2:00:24 GMT -5
By looking at this post, I've made you waste at least 5 seconds of your life. Ha ha. I have absolutely nothing to say about the quadratic formula except that it's long and quadratic equations can sometimes be solved by factoring.
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NunchakuGuy
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Thank you Lord Ryu for animating
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Post by NunchakuGuy on Mar 13, 2004 11:02:57 GMT -5
oh yah well
a-squared=b-squared + c-squared -2cosA
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Arf
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Post by Arf on Mar 13, 2004 14:18:45 GMT -5
A(squared)+B("")=C("")
that is the Pathagorean Therum
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rekawamo
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Post by rekawamo on Mar 13, 2004 17:37:26 GMT -5
.............._________
-b (+-) \/b(b) - 4ac``````=x
.................2a
The opposite of b add or subtract the square root of b squared subtract four a c, all divided by two a.
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Arf
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Post by Arf on Mar 13, 2004 22:05:22 GMT -5
Yeah.....
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Aice
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Post by Aice on Mar 13, 2004 23:47:28 GMT -5
If the value of b(b)-4ac is a perfect square, then there are exactly two roots to the equation.
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rekawamo
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Post by rekawamo on Mar 14, 2004 15:01:45 GMT -5
If b(b)-4ac (which I think is called the discrimanent) is positive, there are two solutions.
If the discrimanent is zero, then there will be one solution because + and - will be the same when you're adding or subtracting zero.
If the discrimanent is negative, then there are no solutions because a number times itself can't be negative.
But how did this topic I made as a joke get turned into a discussion about the quadratic formula?
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Aice
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Post by Aice on Mar 14, 2004 18:44:23 GMT -5
If the discriminant is positive but not a perfect square, then the solutions are rational.
For negative discriminants, the solutions would be imaginery (involving i's).
I think people made up songs in order to memorize the quadratic formula. Not that I've heard any...
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Arf
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Post by Arf on Mar 14, 2004 23:52:59 GMT -5
being in 8th grade while most ofu are in High School I find it hard to keep up...(even with Honors classess)
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Post by Guest on Mar 15, 2004 0:41:47 GMT -5
hell no..hell no... ITS MATH!!! i just finished grade 11 math and i dont wanna see anymore fucking math!! fucking physics is already annoying enough...ugh!
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Aice
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Post by Aice on Mar 15, 2004 1:04:41 GMT -5
Haha. I don't use the quadratic equation anymore, but it's been drilled into my head since middle school.
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Post by superbus on Mar 15, 2004 1:07:12 GMT -5
This thread just made me realise one thing: I have been out of school for too long. Most of this stuff just went whizzing by my head, because I haven't touched most of it for eight years.
I'd better crack open some books, or I'm screwed come September.
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SpyroDi
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Post by SpyroDi on Mar 15, 2004 1:37:18 GMT -5
After reading this topic,I am proud to say that my mind went blank for about 3.2 minutes,literally.
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NunchakuGuy
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Thank you Lord Ryu for animating
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Post by NunchakuGuy on Mar 16, 2004 19:22:32 GMT -5
I didn't post the pathagorean theorm. You haven't learned this one sam, it's in geometry. When your dealing with a triangle and it looks like you don't have enough information to solve it. No-where did I say that it was the pathogorean theorm.
Trust me sam your going to have to memorize a heck of alot more theroms. Assuming your headed for Geometry AP.
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rekawamo
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Posts: 196
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Post by rekawamo on Mar 18, 2004 12:05:38 GMT -5
Another way... not sure if it's correct.
```````````______________
-1/2b (+-) \/-c + (1/2b)(1/2b) ````=x
Only works if a is 1.
opposite of one half b add or subtract radical of opposite of c add one half b quantity squared.
It was on my homework last night. We were given ax(ax)+bx+c=0 and had to go from there. Out math teacher... I don't especially like him. He doesn't understand why we are unable to solve some problems. He treats us as though we are stupid and don't belong in Alg1h. Although I like math (and if I didn't why would I post this crap) I don't look foward to going to math class.
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