Question

if x + 3 is one of the factos x3 +2x2-ax-18, then a =​

Answer 1

Answer:(x+3)=0

X=-3

Now,

We put the value of X

X³+2x²-ax-18=0

(-3)³+2(-3)²-a(-3)-18=0

-27+18+3a-18=0

3a-27=0

3a=27

a=27/3

a=9

Therefore,

A=9

Step-by-step explanation:

Plz... Mark me as brainliest and thanks

follow me to follow back you dear