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bogdanovich [222]
3 years ago
15

F(x) =x^2+6x and g(x)=7-x find (f-g)(x) and (f-g)(9)

Mathematics
1 answer:
liq [111]3 years ago
8 0
(f-g)(x) = x²+6x - (7-x)
(f-g)(x) = x² + 6x - 7 + x
(f-g)(x) = x² + 7x - 7

(f-g)(9) = 9² + 7*9 - 7
(f-g)(9) = 81 + 63 - 7
(f-g)(9) = 137
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