Answer :
Answer:
-8
Step-by-step explanation:
Given:
The expression is given as:
[tex]a^5-14a^3-5a-8ab^2+21b^4[/tex]
Rearranging the terms in standard form with the largest exponent as the first term and smallest exponent as the last term. This gives,
[tex]a^5+21b^4-14a^3-8ab^2-5a[/tex]
Now, the fourth term is [tex]-8ab^2[/tex].
The coefficient is the constant value of the term. The given polynomial has two variables 'a' and 'b'. The constant value in the fourth term is -8.
So, the coefficient of the fourth term of the given expression is -8.