Given a polynomial equation P(x)=0, which two expressions could be a pair of irrational roots of the equation?

Question

Select two answers.
√2−3
−√2+3
2+√3
√3−2
2−√3
is it √3−2 and −√2+3

Answer 1

Your answers are correct.

Answer 2

M and N are zeros of x^2-5x+6=0 then find value of M+N=
(a) 5
(b) -5
(c) 4
(d) 3