If f(x) = x -5, g(x) = 3x + 18, find: (f + g) (x) (f – g) (2)
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If f(x) = x -5, g(x) = 3x + 18, find: (f + g) (x) (f – g) (2)
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Step-by-step explanation:
f (x) = x - 5
g (x) = 3x + 18
(f + g)(x) = f (x) + g (x)
(f + g)(x) = x - 5 + 3x + 18
(f + g)(x) = 4x + 13
(f - g)(x) = f (x) - g (x)
(f - g)(x) = x - 5 - (3x + 18)
(f - g)(x) = -2x - 23
(f - g)(2) = -2 (2) - 23
(f - g)(2) = -4 - 23
(f - g)(2) = -27
I hope this helps