Question

For f(x)=2x1 and g (x)=x2-7,find (f-g)(x)

Answer 1

Your f(x) value is a little ambiguous, so I am assuming the value of f(x)=2x-1

Answer:

(f-g)(x) = 2x-x²+6

Step-by-step explanation:

f(x)=2x-1

g(x)=x²-7

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

= (2x-1)-(x²-7)

= 2x-1-x²+7

= 2x-x²+6

Therefore,

(f-g)(x) = 2x-x²+6