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If f(x) = 3x^2 + 1 and g(x) = 1 – x, what is the value of (f – g)(2)? A:12 B:14 C:36 D:38 Please explain your answer choice.

If f(x) = 3x^2 + 1 and g(x) = 1 – x, what is the value of (f – g)(2)? A:12 B:14 C:36 D:38 Please explain your answer choice.
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5 votes
If f(x) = 3x^2 + 1 and g(x) = 1 – x, what is the value of (f – g)(2)?

A:12
B:14
C:36
D:38

Please explain your answer choice.

asked
User Luger
by
8.4k points

1 Answer

6 votes
f - g(2) = 3x^2 + 1 - ( 1 - x )
= 3x^2 + 1 - 1 + x
= 3x^2 + x
= 3(2)^2 + 2
= 14

the answer is B.14

i am a mathematics teacher. if anything to ask please pm me
answered
User KevinM
by
8.3k points
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