Q.
If α≠β but α2=5α-3 and β2=5β-3, then the equation whose roots are α/β and β/α is
see full answer
Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!
Real Strategies. Real People. Real Success Stories - Just 1 call away
An Intiative by Sri Chaitanya
a
3x2-25x+3=0
b
x2+5x-3=0
c
x2-5x+3=0
d
3x2-19x+3=0
answer is D.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
α2-5α+3=0 ...(i)β2-5β+3=0 ...(ii) From (i)-(ii), ⇒(α2-β2)-5α+5β=0⇒α2-β2=5(α-β)⇒α+β=5From (i)+(ii),⇒(α2+β2)-5(α+β)+6=0⇒(α2+β2)-5.5+6=0⇒α2+β2=19Then (α+β)2=α2+β2+2αβ⇒25=19+2αβ⇒αβ=3then the equation, whose roots are αβ and βα isx2-x(αβ+βα)+αβ.βα=0⇒x2-x(α2+β2αβ)+1=0⇒x2-x.193+1=0⇒3x2-19x+3=0
Watch 3-min video & get full concept clarity