Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5
Banner 6
Banner 7
Banner 8
Banner 9

Q.

The quadratic equations x2−6x+a=0 and x2−cx+6=0 have one root α in common. The other roots of the first and second equations are integers in the ratio 4: 3. Then equation x2−3x−4=0 has

see full answer

Your Exam Success, Personally Taken Care Of

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

both roots more than α

b

both roots less than α

c

one root more than α and other less than α

d

Can't say anything

answer is C.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

Detailed Solution

Let equation x2−6x+a=0 have roots α and βAlso, let equation x2−cx+6=0 have roots α and γGiven βγ=43 ⇒αβαγ=43 ⇒a6=43 ⇒a=8First equation is x2−6x+8=0⇒ (x−2)(x−4)=0⇒ x=2,4If β=4, then γ=3β4=3If β=2, then γ=3β4=32, which is not an integer.Now, x2−3x−4=0⇒ (x−4)(x+1)=0⇒ x=−1,4Clearly, one root is less than 2 and other is more than2
Watch 3-min video & get full concept clarity
score_test_img

courses

No courses found

Get Expert Academic Guidance – Connect with a Counselor Today!

best study material, now at your finger tips!

  • promsvg

    live classes

  • promsvg

    progress tracking

  • promsvg

    24x7 mentored guidance

  • promsvg

    study plan analysis

download the app

gplay
mentor

Download the App

gplay
whats app icon
personalised 1:1 online tutoring