Respuesta :

Answer:

53

Step-by-step explanation:

f(x)= 3x^3+x^2+2x-21

X=-2

2      3   1  2.    21

bring the 3 down

2x3=6

6+1=7

7x2=14

14+2=16

16x2=32

32+21=53

Therefore, you have a remainder of 53