Can't read the full question
Answer:
Step-by-step explanation:
A 'like term' for 7y must have the variable y in it, but would have a different coefficient.
For example: 11y and 7y are like terms: same variable, different coefficients.
Can you please include a pic
<u>Answer:</u>

<u>Step-by-step explanation:</u>
We are the following expression and we are to expand it by multiplying the term outside the parenthesis with terms inside it:
[ t e x ] - 2 x ^ 2 ( 3 x ^ 3 - 5 x ^ 2 + 6 x - 1 ) [ / t e x]
Multiplying the term [ t e x ] - 2 x ^ 2 [/ t e x ] with each of the terms inside the brackets to get:

Note that the exponents are added when multiplied and since each terms has a different exponent so they cannot be added or subtracted.