If f (x) = √x + 12 and g (x) = 2√x what is the value of (f-g) (144) ?

Question

Rumplestiltskin

Mathematics

1 January, 12:26

If f (x) = √x + 12 and g (x) = 2√x what is the value of (f-g) (144) ?

+5

Answers (2)

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Sharp · Answer 1

F (144) = sqrt (144) + 12 g (144) = 2 (sqrt (144))

f (144) = 12+12 g (144) = 2 (12)

f (144) = 24 g (144) = 24

(24) - (24) = 0

Barnett · Answer 2

F (x) = / sqrt (x)

g (x) = 2/sqrt (x)

(f-g) (x) = / sqrt (x) - 2/sqrt (x)

(f-g) (144) = / sqrt (144) - 2/sqrt (144)

(f-g) (144) = 12 - 24

(f-g) (144) = - 12