Answer
a. Opposites.
b. Not opposites.
Work Step by Step
The given factors are $3-x,x-3$.
a.
Multiply the first factor by $-1$.
$=-1(3-x)$
Clear the parentheses.
$=-3+x$
Rearrange.
$=x-3$
This is the second factor.
Hence, the given factors are opposites.
b.
Multiply the first factor by $-1$.
$=-1(2-y)$
Clear the parentheses.
$=-2+y$
Rearrange.
$=y-2$
This is not equal to the second factor.
Hence, the given factors are not opposites.
