Question

If x-2 is factor of x²-3ax-2a, then a =
A. 2
B. -2
C. 1
D. -1

Answer 1

Step-by-step explanation:

i think this will help u plzzzzz mark me as brainlist

Answer 2

Given:  x - 2 is factor of x² + 3ax - 2a

 [Mistake in the question]

To find : The value of a .

Solution :  

Let f(x) = x² + 3ax - 2a

Since, x - 2 is a factor of f(x) so, f (2) = 0

On Substituting x = 2 in f (x),

f(x) = x² + 3ax - 2a

f(2) = 2² + 3a(2) - 2a

0 = 4 + 6a - 2a

-4 = 4a

a = - 4/4

a = -1

Hence the value of a is - 1.

Among the given options option (D) - 1 is correct.

HOPE THIS ANSWER WILL HELP YOU…..

 

Similar questions :

If x+1 is a factor if the polynomial 2x²+kx, then k =

A. -2

B. -3

C. 4

D. 2

https://brainly.in/question/15905094

 

When x³-2x²+ax=b is divided by x²-2x-3, the remainder is x-6. The value of a and b respectively

A. -2, -6

B. 2 and -6

C. -2 and 6

D. 2 and 6

https://brainly.in/question/15905088