Question

if m,n are irrational roots of ax^2+bx+c=0,a not qual to 0 (a,b,c belongs to Q) then .....................

Answer 1

do you have choices for this fill in the blank?

Answer 2

no ithink it is about property of roots

Answer 3

there are quite a few things that could fill that blank >.<
...they add up to a real number.
...they are conjugates of each other.
...their sum is b/a.
...their product is c/a.

gotta be a little specific >.<

Answer 4

i would imagine the answer you are looking for is the conjugates part.

Answer 5

ya thx
why is it conjugates?

Answer 6

if:
\[a+b\sqrt{c}\]
is one of the roots, then:
\[a-b\sqrt{c}\]
has to be the other, because the coefficients of the polynomial were rational, not irrational. When you multiply conjugates, the irrational part disappears.

Answer 7

so answe is rational conjugates ?

Answer 8

?

Answer 9

yes