Question

What numbers should be excluded as values of x in the polynomial? x squared minus 4x + 4 over x squared minus 5x + 6

Answer 1

x cannot be 2 or 3

Answer 2

=x^2-4x+4/x^2-5x+6
=(x-2)(x-2)/(x-3)(x-2)
=(x-2)/(x-3)

so x is not equal to 3 or 2

Answer 3

if you notice, the denominator of this beastly fraction can factor into (x-2)(x-3). then if x were equal to 3 or 2, you would be dividing by zero, which is NOT cool....there fore x cannot be 2 or 3...ever.

Answer 4

oh okay thank you