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Question

If f(x) = x2 - x + 1, g(x) = 7x - 3, be two real functions then (f - g)(8) is



Your Answer
A

64

Your Answer
B

53

Your Answer
C

57

Correct Answer
D

4


Solution

The correct option is D

4


For functions f : X → R and g : X → R, we  have

(f - g)(x) = f(x) - g(x), x Є X

Hence,

(f - g)(8) = f(8) - g(8) = 4

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