What values of xxx must be excluded from the domain of dfrac17(x−18)(x+19)\\dfrac{17}{(x - 18)(x + 19)}dfrac17(x−18)(x+19)?
x=18x = 18x=18 only
x=0x = 0x=0
x=18x = 18x=18 and x=−19x = -19x=−19
x=−18x = -18x=−18 and x=19x = 19x=19