17. If the roots of the quadratic e...
Question
Fullscreen

17. If the roots of the quadratic equation x2 +px+q=0 are tan 30° and tan 15° respectively then the value of 2 +q-pis 1)1 2 2 3 3 4) 0

JEE/Engineering Exams
Maths
Solution
231
Rating
4.0 (1 ratings)
Fullscreen

x2+px+q=0 given ,α =tan 30o=13  &      β  =tan 15o                                                                    =tan (45o-30o)                                                                    =2-3     so, α +β =-p1    13+2-3=-pp=3-13-2  p=3-1-233=2-233=23-2    αβ=ca=q1    x+q-p =2+23-1-23-2     =2+23-1-23+2 = 4-1 =3 ans . opition (a) is correct 

Quick and Stepwise Solutions Just click and Send Download App OVER 20 LAKH QUESTIONS ANSWERED Download App for Free