Question

12. If x-2 is a factor of 5x?- kx – 18, then find the value of k.
(1 Point)
-1
1
0
5​

Answer 1

Answer:

Option b

Step-by-step explanation:

If x-2 is a factory of given equation, then x=2 satisfy the equation 5x^2 -kx-18=0

Therefore, 5(2)^2-2k-18=0

20-2k-18=0

-2k=-2

k=1

Answer 2

Step-by-step explanation:

given expression is 5x²-kx-18

x-2 is factor of given expression so when we divide 5x²-kx-18 with x-2 reminder must be 0

when we divide the reminder is 20-2k-18

by solving this k=1