3x,−3,−3x^{2}−3x^{2} ,−5x−5x Which of these terms does not belong in the group and why?

Question
Equations and inequalities
asked 2020-11-12
\(\displaystyle{3}{x},−{3},−{3}{x}^{{{2}}}−{3}{x}^{{{2}}},−{5}{x}−{5}{x}\)
Which of these terms does not belong in the group and why?

Answers (1)

2020-11-13
This question can have multiple answers. The key thing to answering this question is your explanation as to why the term doesn't belong with the others.
One answer could be that 3x doesn't belong because it is a positive term while the other three terms are negative terms.
A second possible answer could be that −3 doesn't belong because it is a constant while the other three terms are variable terms since they have the variable xx in them.
Of these two possible answers, the second one is the more important difference so its the answer I would go with.
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