Question

Given that (x + 3) is a factor of 6x3 - bx2 +18 find the value of b​

Answer 1

Answer:

x+3 is a factor of 6x3...

Answer 2

Answer:

x=(-3).... Substitute value of x

6(-3)³ -b(-3)² +18=0

6(-27) -b(9) +18=0

-162 -9b + 18=0

-144-9b=0

-144/9=b

b=(-6)

Hope it helps you