1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya
a
2
b
a>3
c
-3
d
a<-2
answer is D.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
If the roots of the quadratic equation ax2+bx+c=0 exceed a number k, then ak2+bk+c>0 if a>0, b2-4ac≥0 and sum of the roots >2k therefore, if the roots of x2+x+a=0 exceed a number a, then a2+a+a>0, 1-4a≥0 and -1>2a⇒a(a+2)>0, a≤14 and a<-12⇒a>0 or a<-2, a<14 and a<12Hence a<-2