Find (f-g) (X) =f(X)-g(X)

f(X)= X (X) +3 and g(X)= 4X-2 | Wyzant Ask An Expert

Andy C. answered • 01/16/18

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THe function f(x) is not clear. It is either f(x) = x+3 or f(x) = x*x+3 = x^2 + 3.

Assuming the former,

f - g is x+3 - (4x - 2) = x +3 - 4x + 2 = -3x + 5

Assuming the latter,

x^2 + 3 - (4x -2) = x^2 +3 - 4x + 2 = x^2 - 4x + 5

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