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

Q.

The ratio of the roots of the equation ax2+bx+c=0 is same as the ratio of the roots of the equation px2+qx+r=0. If D1 and D2 are the discriminants of ax2+bx+c=0 and px2+qx+r=0 respectively, then D1:D2=

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya

a

a2p2

b

b2q2

c

c2r2

d

none of these

answer is B.

(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 α1, β1 be the roots of ax2+bx+c=0 and α2, β2 be the roots of px2+qx+r=0. Then,    α1β1=α2β2                         [Given]⇒ α1+β1α1−β1=α2+β2α2−β2        [Applying componendo land dividendo]⇒    α1+β12α1−β12=α2+β22α2−β22⇒    α1+β12α1+β12−4α1β1=α2+β22α2+β22−4α2β2⇒    b2/a2b2−4aca2=q2/p2q2−4rpp2⇒b2D1=q2D2⇒D1D2=b2q2
Watch 3-min video & get full concept clarity
score_test_img

courses

No courses found

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon
The ratio of the roots of the equation ax2+bx+c=0 is same as the ratio of the roots of the equation px2+qx+r=0. If D1 and D2 are the discriminants of ax2+bx+c=0 and px2+qx+r=0 respectively, then D1:D2=