Grade 12Algebra
If a(b-c)x^2 + b(c-a) x + c(a-b) =0 hai equal roots then 2/b=
2 Answers
Saurabh Koranglekar
Dear student
D = 0
b^2 -4ac = 0
using the quadratic formula we can find the required
D = 0
b^2 -4ac = 0
using the quadratic formula we can find the required
Aditya Gupta
saurabh’s answer is sonce again not feasible.
let f(x)= a(b-c)x^2 + b(c-a) x + c(a-b)
note that f(1)=0
note that f(1)=0
that means both roots should be 1.
so 1+1= -b(c-a)/a(b-c)
and 1*1= c(a-b)/a(b-c)
from these eqns it is much easier to find b
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