Answer
a) $x=3$
b) $x=1, 2$
c) no values
Work Step by Step
A fraction is undefined if the denominator is zero.
a)
$x-3=0$
$x=3$
b)
$x^2-3x+2=0$
$(x-1)(x-2)=0$
$x-1=0$
$x=1$
$x-2=0$
$x=2$
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