Answer:
[1]
Given: 
Remove the parenthesis, we get;


Like terms are the those terms with same variable and powers.
Combine like terms;

To write this polynomial in standard form, you write starting with the term with the highest degree, or exponent(i.e  ), and then in decreasing order .
), and then in decreasing order .
Standard form: 
To, classify a polynomial by degree, you just look at the highest exponent, or degree.
Since, 3 is the highest degree ( ), it is a cubic.
), it is a cubic.
Now, classify a polynomial by the number of terms, count how many terms are in the polynomial(  )
)
Number of terms: 4 (so this is polynomial)
[2]
Similarly, 
for  
Remove the parenthesis, we get;

Combine like terms; we have

Standard form: 
Degree of the polynomial is, 2
Number of terms: 3 ( so, this is trinomial)