Answer:
[tex]s^2t^2[/tex]
[tex]4(s\cdot t)[/tex]
[tex]-6(s^2+t)[/tex]
Step-by-step explanation:
We want to select all the terms that are not considered to be like terms with [tex]-6s^2t[/tex].
The terms that are like terms with [tex]-6s^2t[/tex] must have [tex]s^2t[/tex].
It doesn't matter the coefficient.
So we can easily see that all the following are not like terms with [tex]-6s^2t[/tex]:
[tex]s^2t^2[/tex]
[tex]4(s\cdot t)[/tex]
[tex]-6(s^2+t)[/tex]
