1.

If x-a is a factor of x3 - 3x2a + 2a2x+b, then the value of b isA. 0 B. 2 C. 1 D. 3

Answer»

Let f (x) = x3 - 3x2a + 2a2x + b 

Since, x - a is a factor of f(x) 

So, 

f (a) = 0 

a3- 3 a2 (a) + 2a2 (a) + b = 0 

a3 - 3a3 + 2a3 + b= 0 

b = 0



Discussion

No Comment Found