Question

( x=frac{-2 pm sqrt{4-12}}{2} )
( x<0 text { [imeginury }] )
They axe conjugate
( x^{2}+2 x+3 quad ) & ( a n^{2}+b x+c ) are similal
( therefore frac{1}{a}=frac{2}{b}=frac{3}{c} )
( a: b: 3=1: 2 ! 3 )

# 2.5 If the equation x2 + 2x+3 = 0 and ax2 +bx+c=0, a, b, c e R, have a common root, then a:b:cis (A) 3:2:1 (B)1:3:2 (C)3:1:2 (D) 1:2:3

Solution