9514 1404 393
Answer:
c x^2
Step-by-step explanation:
As with many of these "doesn't belong" questions, you can make a rule that will exclude any one of the possible choices.
a) the only expression with a negative added constant
b) the only expression with parentheses
c) the only expression with a degree of 2 (and the only one that is a single term)
d) the only expression not involving x
__
I might choose (C), the 2nd-degree, single-term expression because there are a couple of reasons why it does not belong.
_____
Additional comment
The line at the bottom of the figure tells you (a) there is more than one "right" answer, and (b) each choice has at least 2 reasons why it doesn't belong.
