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 '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)-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 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 in x is

For what value of k(k^(2)-1)x^(2)+(k^(2)-4k+3)x+(k^(2)-3k+2)=0 is an identity in x?

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

What is Identity equation & Inequalities ? (i)If (a^2-1)x^2+(a-1)x+a^2-4a+3=0 is an identity in x; then find the value of a .

What is Identity equation & Inequalities ? (i)If (a^(2)-1)x^(2)+(a-1)x+a^(2)-4a+3=0 is an identity in x; then find the value of a.

Find how many roots of the equations x^4+2x^2-8x+3=0.