Answer:
See explanation
Step-by-step explanation:
Assuming the given polynomial is
[tex]3u + 12 {u}^{2} - 7 {u}^{3} + 1[/tex]
We then rewrite in decreasing powers of u, to get:
[tex] - 7 {u}^{3} + 12 {u}^{2} + 3u + 1[/tex]
The leading term is
[tex] - 7 {u}^{3} [/tex]
The leading coefficient is the coefficient of the leading term.
The leading coefficient is -7.
