Question

If x – 2 is factor of x² + 3ax – 2a, then a =
(a) 2 (b) -2 (c) 1 (d) -1

Answer 1

Answer:

(d) -1

Step-by-step explanation:

x-2=0

x=2

p(x)= x²+3ax-2a

p(2)=> (2)²+3a(2)-2a=0

=> 4+6a-2a=0

=>4+4a=0

=>4a= -4

=>a= -4/4

=>a= -1.

hope this helps..