Question

сократите дробь n3-9n/n+3

Answer 1

1) n^3 - 9n = n * ( n - 3 ) * ( n + 3 ) ; 2) ( n*( n - 3 )*( n + 3 )) / ( n + 3 ) = n * ( n - 3 ) = n^2 - 3n