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Need help with a maths problem
#11
(07-10-2011, 03:21 AM)BlackChaos Wrote: First of all, you need simplify the equation:

x^2 + 3x + 2 = x^2 + ax + 2x + 2a

Then, we bring the variable to one side and the numerical values on the other side by transposing them:

x^2 + 3x - x^2 - ax -2x - 2a = -2

By simplifying further, we get:

x - ax = -2

-x + ax = 2

Now we try to bring x to right hand side:

a = (2 + x)/x

This is the solution for a in terms of x. If you have the value of x, then you can find the value of a as well.


Hope this helps. Smile

Allthough this answer wos incorrect it still made my brain hurt xD I've never been great at maths.
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#12
I was in Algebra 1 but I decided that I was more interested in the Calculators (TI89+ or something like that)
So I got taken out.
[Image: sighype.gif]
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#13
Is it just me or is this hard?

Whistle
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#14
(07-20-2011, 10:49 PM)Bad Meets Evil Wrote: Is it just me or is this hard?

Whistle
It is sort of hard.
Not that hard though.. I just couldn't concentrate ;)
[Image: sighype.gif]
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#15
I find it as easy as addition and multiplication, it's all it really is. (+/-, divide/multiply)
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#16
If you know the basic concepts like BODMAS and arithmetic, then it isn't as hard as it seems.
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#17
(07-20-2011, 10:54 PM)Hazardous Wrote: It is sort of hard.
Not that hard though.. I just couldn't concentrate ;)
Well, I'm only in 8th grade. So we haven't started this yet.
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#18
(07-20-2011, 11:25 PM)BlackChaos Wrote: If you know the basic concepts like BODMAS and arithmetic, then it isn't as hard as it seems.

"BEDMAS"? You mean
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#19
(07-21-2011, 12:12 AM)Ace Wrote: "BEDMAS"? You mean

There are many variations of the rule: BEDMAS, BIDMAS, BODMAS, BERDMAS, PERDMAS, and BPODMAS are some of them. I was taught BODMAS. The "O" stands for Order instead of Exponentiation.
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#20
Well it is the "Exponents" after the "Brackets" so I find it easier to remember that way. Never knew there were other variations.
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