Find the value of 'a'

Question

The value of "a"  which the expression (a² - 3a+2)x² + ( a² - 5a + 6)x + a² - 4 =0 is true for all x is

A. 0

B. 1

C. 2

D. 3

Answer 1

(a - 1)(a - 2)x² + (a - 2)(a - 3)x + (a - 2)(a + 2) = 0

 

True for all x when a = 2.