Question

the value of m for which the equation (m+1) - 2mx+2x+1=0 has equal roots is

Answer 1

Answer:

The equation is:-

(m+1).x^2+(2m+5).x+(m+3)=0 has equal roots.

Discreminent = b^2–4a.c = 0

(2m+5)^2 -4 (m+1). (m+3) = 0

4m^2+20m+25–4m^2–16m-12 = 0

4m = -13

m = -13/4 , Answer