Question

Let f(x) = 9 – x g(x) = 3 – x. Find (f – g)(x)

Answer 1

Explanation:

Remark

This would be easier to understand if it was written like f(x) - g(x). You might see what the question really is.

Equation

(f - g)x = f(x) - g(x)

Solution

(f - g)x = 9 - x - (3 - x) remove the brackets

(f - g)x = 9 - x - 3 + x

(f - g)x = 6