Question

If 3x3-9x2+kx+12 is divisible by x-3 then it is also divisible by​

Answer 1

Answer:

It is also divisible by x-1

x-1= 0

x= 1

Step-by-step explanation:

p(x)= 3x^3-9x^2+kx+12

p(1)=3(1)^3-9(1)^2+k(1)+12

= 3-9+k+12

= 3+3+k

= 6+k

k=-6

To check:

3(1)^3-9(1)^2-6(1)+12

3-9-6+12

-6-6+12

= 0

Hope it helps

#ARMY

#MULTIFANDOM