zoeyjorschumb17
04.08.2019 •
Mathematics
For f(x) = 3x + 1 and g(x) = x^2 - 6, find (f-g) (x) a. 3x^2 - 17 b. -x^2 + 3x + 7 c. x^2 - 3x - 7 d. -x^2 + 3x - 5
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Ответ:
B. -x^2 + 3x + 7
Step-by-step explanation:
(f -g)(x) = f(x) -g(x) = (3x +1) - (x^2 -6) . . . . substitute the functions
= 3x +1 -x^2 +6 . . . . . . . eliminate parentheses; next, collect terms
= -x^2 +3x +7 . . . . . matches choice B
Ответ:
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