Question

Consider the functions f(x) = x2 − 13 and g(x) = x + 5. What is the value of (f − g)(−4)?

4

3

−3

2

Answer 1

(f-g)(x) = (x^2-13)-(x+5)
so (f-g)(-4) = (-4)^2-13-(-4+5)
= 16-13-1
=2

Answer 2

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