Question

9. If A is the solution set of 2 - 5x + 6 = 0
and B is the solution set of x- 3x - 6 = 2
then AB= A.P. Polycet 2016 ( 4 )
1)
2) A
4) {2}
10. If the sum of the squares of the roots of
3) B​

Answer 1

Answer:

x

2

+5x+6≥0⇒(x+2)(x+3)≥0⇒x∈(−∞,−3]∪[−2,∞)

and x

2

+3x−4<0⇒(x+4)(x−1)<0⇒x∈(−4,1)