Question

9. 1f x²-x-6 and x²+ 3x – 18 have a common factor (x – a) then find the value of a​

Answer 1

Step-by-step explanation:

(x-a)²-(x-a)-6 = (x-a)²+3(x-a) -18

or 4(x-a)= 12

or x-a = 3

or a = x-3

Answer 2

Answer:

a= -6

Step-by-step explanation:

x-a becomes

x=a

so now x²-x-6

=a²-a-6

=a²-a=6 - 1

and x²+3x-18

=a²-3a-18

=a²-3a=18 - 2

Now from 1 = 2 we get

=18+3a-a=6

=2a=6-18

= a=12/2

= a= -6

Hope it helps you