In this expression Marianna claims that 2X And negative X are not like terms because -x doesn't have a coefficient. Is she correct?Explain your reasoning

She is incorrect

Step-by-step explanation:

Given:

2x and -x

Required

Like term or not?

Like terms are determined by the term itself and not by their coefficients;

Take for instance;

and are not like terms because a term has square while the other doesn't

Another instance;

and are like terms because they both have the presence of just 1 x

In Marianna's case;

2x and -x are like terms;

Reason being that: -x can be rewritten as -1x; giving it a coefficient of -1

been looking for the answer havent been able to find it   but good luck with it

i belive those are the ones that are under 90 degreese.