Answer:
Option 2 is correct.
Step-by-step explanation:
We need to choose polynomial into standard form.
Standard form of polynomial: The highest degree term should be first one and then write term reducing the exponent.
For example:
Now, we will see each option for standard polynomial.
Option 1:
Degree of polynomial = 6
But first term degree is 4
Thus, Not in standard form
Option 2:
Degree of polynomial = 6
But first term degree is 6
Thus, It is in standard form
Option 3:
Degree of polynomial = 8
But first term degree is 6
Thus, Not in standard form
Option 4:
Degree of polynomial = 12
But first term degree is 9
Thus, Not in standard form
Hence, is in standard form.