Tricky P1 Maths Questions (debatable)

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Bhaal85
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#21
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#21
(Original post by Ralfskini)
yes, but how is that relevant.
Trying to test us, I think. I hold an A-level in Maths.
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BABYGUY
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#22
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#22
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Bhaal85
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#23
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#23
(Original post by BABYGUY)
Get back to the orignal equation:

4 - 3(root2) / 5 - 3(root2) =0

If we multiply by the denominator we get

((4-3(root2))((5-3(root2) = 20 -12roo2-15root2+12

therefor the answer is:

32-27root2
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BABYGUY
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#24
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#24
..........damn! i was looking at the wrong thingy.of course...........
2 - (5x + 2) is like (2) -1(5x + 2)
which gives: (2) - 5x - 2
which gives: -5x (2-2)
which leaves: -5x

i was looking at some other crap and getting confused by mixing up 2 questions...........*bangs head against the wall and gets new pair of glasses*
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Ralfskini
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#25
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#25
(Original post by Bhaal85)
Get back to the orignal equation:

4 - 3(root2) / 5 - 3(root2) =0

If we multiply by the denominator we get

((4-3(root2))((5-3(root2) = 20 -12roo2-15root2+12

therefor the answer is:

32-27root2
no but it doesnt equal 0!!!
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Bhaal85
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#26
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#26
(Original post by Ralfskini)
no but it doesnt equal 0!!!
I dont know, cause the other person wouldn't tell me if f(x) = 0 or not, so I presumed so.
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Ralfskini
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#27
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#27
It equals -1.090568824 (9.d.p)
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Bhaal85
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#28
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#28
(Original post by Ralfskini)
It equals -1.090568824 (9.d.p)
Didn't the person want it expressed as p+q(root2)?
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Ralfskini
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#29
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#29
work it out on a calculator... and I dont know where u got f(x) from when there are no x's the original identity!
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Ralfskini
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#30
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#30
Indeed they did. And Ive done it twice for each interpretation I made of what they wrote.
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Bhaal85
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#31
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#31
(Original post by Ralfskini)
work it out on a calculator... and I dont know where u got f(x) from when there are no x's the original identity!
If you knew anything about maths, f(x) means the function.
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Bhaal85
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#32
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#32
4-3root2 / 5-3root2 can be expressed as

(4-3^1/2)
-----------
(5-3^1/2)
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kikzen
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#33
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#33
i got 2/7 - 3/7 root 2
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elpaw
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#34
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#34
(Original post by kikzen)
i got 2/7 - 3/7 root 2
I agree
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Bhaal85
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#35
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#35
(Original post by kikzen)
i got 2/7 - 3/7 root 2
could you show me how you did that? Please.
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Ralfskini
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#36
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#36
(Original post by kikzen)
i got 2/7 - 3/7 root 2
THANK YOU, thats wot i got bout half an hour ago!!! (scroll up)
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elpaw
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#37
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#37
(Original post by Ralfskini)
I get 2/7 - 3/7(root2)
I agreed with you first
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Ralfskini
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#38
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#38
(Original post by Bhaal85)
If you knew anything about maths, f(x) means the function.
Yes. I do know a lot about maths. And I would expect you to know that you cant just turn something into a function for convenience, nor can you assume it is equal to 0. Those assertions wont help
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Ralfskini
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#39
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#39
(Original post by elpaw)
I agreed with you first
thank yo
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Bhaal85
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#40
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#40
(Original post by kikzen)
i got 2/7 - 3/7 root 2
****!!! I dont think I can do this, my mind is in a block at the moment, could somebody, anybody show how they did that.
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