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lateralus
Posts:
3
From:
superior, WI
Registered:
10/5/06


Can I get any help on this?
Posted:
Oct 5, 2006 9:12 PM


ok i've been working on this for quite some time:
we all know the quadratic formula: (b+?b24ac)/2a
and this we know will give us two answers for x
so what we know are: A,B,C ANSWER 1 AND ANSWER 2 (which we'll call A1 and A2)
ok now so we'll start with an equasion in radical form:
(2x+6)(3x+9)=0 when you do the foil method this turns into:
6x2+36x+54=0
and we know x=3 and x=3 (that worked out nicely)
ok so for this equasion
A=6........A1=3 B=36.......A2=3 C=54
now i want to be able to change this into radical form just knowing that information. so here's what i've come up with (remember the equasion in radical form is: (2x+6)(3x+9) so i've given variable names to those numbers in the radical form of the equasion in order W,X,Y,Z
so in this case,
(2X+6)(3X+9) .W..X..Y..Z
W=2 X=6 Y=3 Z=9
see what i'm saying?
ok so i've defined each variable you might have to look at this for a while to see what i'm saying remember we only know a,b,c,a1,and a2 we don't know W,X,Y,or Z.
W=A/Y....................X=C/Z W=X/AN..................X=W*AN W=(BYX)/Z...............X=(BZW)
Y=Z/W....................Z=C/X Y=Z/AN2.................Z=Y*AN2 Y=(BZW)/X...............Z=(BYX)/W
if you think about it you'll see what i'm talking about so what i want is to define at least one variable using only the information I know (A,B,C,AN1,AN2) so i start with (using what i know from the above info): NOTE: A MEANS A/Z THERE IS NO UNDERLINE SORRY ..........Z
Y=A/W
Y=A/(BYX) ........(..Z.)
Y=A/(BYX) .......(Y*AN2)
Y=A/[BY(BZW)] .......[.....(..Y.)..] .......[....Y*AN2.]
Y=A/{BY[B((Y*AN2)*(A/Y))]} .......{.....[.............Y...........]} .......{...........AN2*Y............}
ok see how i only have one unknown variable which is Y.
my problem is i can't simplify this so Y is on one side of the = sign. can anyone help me? or do you see any problem in my math?
i appreciate your help,
lateralus



