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For f(x) = 2x + 1 and g(x) = x^2- 7, find (f - g)(x).
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4 votes
For f(x) = 2x + 1 and g(x) = x^2- 7, find (f - g)(x).

User Hariom Singh
by
3.7k points

2 Answers

2 votes

Answer: -x^2+2x+8

Explanation:

(f-g)(x)=2x+1-(x^2-7)

(f-g)(x)=2x+1-x^2+7

(f-g)(x)= -x^2+2x+8

User Robert Cardona
by
3.6k points
3 votes

Answer:

x^2 + 2x - 6

Explanation:

(f + g)(x) = f(x) + g(x)

= (2x +1) + (x^2 - 7)

= x^2 + 2x - 6

User Olatokunbo
by
3.8k points
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