Question

Which of the terms cannot be combined with the others?
-3x
4x 2
x
11x

Answer 1

Ok, so if there is just an x or a number times x, that can be added (or combined) to other x's within the same power.
\[\large 3x+5x\\\large 3x^{2}+5x^{2}\\\large 3x^{3}+5x^{3}\]

Answer 2

Notice how out of the 4 options, 3 are in the same power? \[\large -3x\\\large 4x^{2}\\\large x\\\large 11x\] Which 3 are in the same power?