How can I factorize the top part? http://newton.matem.unam.mx:8080/ejercicios/racionales/p0416.gif

what is 3*28?

84

So two numbers that multiplied are 84 and added -25?

\[(s-\frac{a}{3})(s-\frac b3)\] yes, ab = 28, and a+b = -25

IF it factors into rational parts that will work

err... ab = 84

28 and 3?

since its asking you to simplify; assume that the bottom has a factor common with the top

Yep, I assumed that before

the bottom is what: (3s-4) (3s+4)

Yep

when s=+-4/3 does the top zero out?

looks like 3s-4 is a factor

so s-7?

(-4)*(-21) = 84 -4-21=-25

\[(s-\frac{4}{3})(s-\frac {21}3)\] \[(s-\frac{4}{3})(s-7)\] \[(3s-4)(s-7)\]is the top

Ok, thanks Amistre :)

why no mod status?

and, youre welcome ;)

They removed it from me long time ago :(

When they changed to the system of highest points became mod

hmmm, i recall you being a regular mod instead of just a room mod. If you want it back, all I gotta do is prolly tell Preetha to reinstate you.

I am not really active right now. If I get to be active in some weeks, I will ask you :) thanks

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