Question

What is the coefficient of n^2 in the sum of -5^4+4n^2-n+5 and 7n^4-5n^3-9n^2+3n+2

Answer 1

Hello :
-5^4+4n^2-n+5  : the coefficient of n^2 is : 4
 7n^4-5n^3-9n^2+3n+2 : he coefficient of n^2 is :-9