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algebra thread
Topic Started: Jan 30 2007, 03:57 PM (562 Views)
TheoreticFish

CrimsonEXE
Jan 31 2007, 12:44 AM
TheoreticFish
Jan 30 2007, 10:13 PM
4x+y= -5
2x-y+ -1
?

Uh..
-4x-5 = y
2x+1 = y
2x+1 = -4x-5
6x = -6
x=-1

you didnt finish for y
but its also -1 so what ever

whatever dude.

Nobody has solved mine yet.
Or even mentioned it.
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mossad

TheoreticFish
Jan 30 2007, 06:23 PM
Here's an easy one
1) e^x = 12.

Then put it into an actual equation I guess
2) 10^-3x - 120 = 18

..Backwards?
3) 9 - 3 ln x = 6

Solve any... and round to the nearest thousandth I guess.

whats the "^"?
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TheoreticFish

"To the power of"
You don't know that?

such as 2^4 = 2 "to the power of" 4 = 16

3^2 = 3 "squared"

etc.
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fish i guess your question is too hard for members, i saw it and it looks complicating.
heres a easy one for the easy people.

5X+3=7X-2

X=?
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TheoreticFish

That was the main point.
They're not even hard if you know what to do.

x = (5/2) or 2.5
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yeah you are correct, well if you know poblems like the ones you posted then you probably know many of the problems i will post inthe future, its just that i want to post easy ones so people post and then get higher in difficulty as we go. heres another

6X-23=5X+34
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TheoreticFish

Those are all too easy.. plus they use the same principle.

Here, at least do another type of algebra.

x^2 + 6x = -9
(This will be easiest if you know how to factor)
(Hint: move -9 to the left side to get x^2 + 6x + 9 = 0)
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TheoreticFish
Feb 1 2007, 04:48 PM
Those are all too easy.. plus they use the same principle.

Here, at least do another type of algebra.

x^2 + 6x = -9
(This will be easiest if you know how to factor)
(Hint: move -9 to the left side to get x^2 + 6x + 9 = 0)

its -6(big square root sign)6squared- 4(1)(-9)(end quotient)and all of this is divided by 2

thats the formula but i dont feel like doing it.
though is it 360
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TheoreticFish

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Feb 1 2007, 04:55 PM
TheoreticFish
Feb 1 2007, 04:48 PM
Those are all too easy.. plus they use the same principle.

Here, at least do another type of algebra.

x^2 + 6x  = -9
(This will be easiest if you know how to factor)
(Hint: move -9 to the left side to get x^2 + 6x + 9 = 0)

its -6(big square root sign)6squared- 4(1)(-9)(end quotient)and all of this is divided by 2

thats the formula but i dont feel like doing it.
though is it 360

You actually put it in the quad. forumla?
It would've been easy to factor..

x^2 + 6x + 9 = (x+3)(x+3) = (x+3)^2 = 0

Therefore x = -3...

Not 360
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well i learned that formula and i wasnt really trying, so i took a guess. but i did learn how to do that.
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TheoreticFish

Your guess was 357 off though..
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yeah, well any more problems people want to post?
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