Question

find the domin of the function 1/x^2-5x+6

Answer 1

f(x) = x/(x^2 -5x +6)

domain means value here value of x where function exist.

now,

function does not exist when , x^2 -5x + 6= 0

(x-2)(x-3) = 0

X = 2, 3

hence, domain € R - {2,3}

e.g domain belongs to all real numbers except 2 and 3