What values of xxx must be excluded from the domain of dfrac21(x−22)(x+23)\\dfrac{21}{(x - 22)(x + 23)}dfrac21(x−22)(x+23)?
x=−22x = -22x=−22 and x=23x = 23x=23
x=22x = 22x=22 only
x=0x = 0x=0
x=22x = 22x=22 and x=−23x = -23x=−23