((Here Alpha=A, and Beta=B)).................................... a(x-2)^2 - b(x-2)(x-3) + c(x-3)^2= 0........................ Observe that this can be simplified as......... => (a-b+c)x^2 - (4a-5b+6c)x + (4a-6b+9c) =0...................Now divide all terms by `a`. .................So now you get terms like (-b/a) and (c/a) in the equation with their respective coefficients. .............Now we know that as ax^2+bx+c=0,.............(1) (-b/a) = A+B,,,,, (2) (c/a) =AB........................So replace such terms in the equation using these............. Now a, b, c have been completely eliminated. Now you get............=> (1+A+B+AB)x^2 - (4+5A+5B+6AB)x + (4+6A+6B+9AB)=0............................by the method of factorization and observation this becomes:...............(pq)x^2 + (rq+sp)x + (rs) =0...................Where,p=(1+A),q=(1+B),r=(2+3A),s=(2+3B)..................Using quadratic equation this can be easily solved to get the roots... ....Which are:........(1) (r/p) = (2+3A)/(1+A)..........(2) (s/q) = (2+3B)/(1+B).