Question

If f (x) = square root of x + 12 g(x) = 2 square root x, what is the value of (f – g)(144)?

–84
–60
0
48

Answer 1

o is correct answer

Explanation:

f(x)=
`√(x)`+12

g(x)=2
`√(x)`

we will find

(f-g)x=
`√(x)`+12-2
`√(x)`

(f-g)x=-
`√(x)`+12

now we will find

(f-g)(144)

put x=144

(f-g)(144)=-
`√(144)`+12

(f-g)(144)=-12+12=0

hence proved

Answer 2

0

Explanation:

`f(x)=√(x)+12  and g(x)=2√(x)`

We need to find (f-g)(144)

(f-g)(144) = f(144) - g(144)

`f(x)=√(x)+12`

`f(144)=√(144)+12=12+12= 24`

`g(x)=2√(x)`

`g(144)=2√(144)=2(12)= 24`

(f-g)(144) = f(144) - g(144)= 24-24=0