Question

find a if the two polynomials ax^3+3x^2-9 and 2x^3+4x+a leave the same remainder when divided by X + 3​

Answer 1

Answer:

3

Step-by-step explanation:

a(-3)^3+3(-3)^2-9=2(-3)^3+4(-3)+a

a(-27)+3(9)-9=2(-27)-12+a

-27a+27-9= -54-12+a

-27a+18= -66+a

-27a-a = -66-18

-28a = -84

28a = 84

a = 84/28

a = 3

hope it is correct