The number of values of a for which `(a^2-3a+2)x^2+(a^2-5a+6)x+a^2-4=0` is an identity in x is

The number of values of 'a' for which (a^2-3a+2)x^2+(a^2-5a+6)x+a^2-4 =0 is an identity is

The number of values of a for which (a^(2) – 3a + 2)x^(2) + (a^(2) - 5 a+6)x +a^(2) - 4=0 is an identity in x is

For how many values of a,equation (a^2-3a+2)x^2+(a^2-4)x+a^2-a-2=0 is an identity

The number of values of x for which |x^(2)-x+4|-2|-3|=x^(2)+x-12

The number of values of the pair (a,b) for which a(x+1)^(2)+b(-x^(2)3x-2)+x+1=0 is an identity in x, is

The number of values of x for which |||x^(2) -x+4| -2| =3|=x^(2) +x- 12 is …………………

The number of values of the pair (a, b) for which a(x+1)^2 + b(-x^2 – 3x - 2) + x + 1 = 0 is an identity in x, is

If (a^2-1)x^2+(a-1)x+a^2-4a+3=0 is identity in x , then find the value of a .