Question

If f(x) = 2x⁷+ 3x - 5, which of the following is a factor of f(x)? 

(A) (x³ +8) 

(B) (x - 1) 

(C) (2x - 5) 

(D) (x + 1)

Answer 1

Correct option is (B) (x - 1) 

from the option (bo substitute x = 1 in

2x + 3x  -5 = 0

2(1)⁷ + 3(1) - 5 = 0

5 - 5 = 0

So (x - 1) is a factor of f (x)