Ff(x) = 4 – x2 and g(x) = 6x, which expression is equivalent to (g – f)(3)?

(g – f)(3) =  23.

Step-by-step explanation:

Given  :  f(x) = 4 – x² and g(x) = 6x .

To find : which expression is equivalent to (g – f)(3).

Solution : We have given   f(x) = 4 – x² and g(x) = 6x .

(g – f)(3) = g (3 ) - f(3) .

g(x) = 6x

Plug x = 3 .

g(3) = 6 *3 .

g(3) =  18.

For    f(x) = 4 – x².

Plug x = 3

f( 3) = 4 – (3)².

f(3) = 4 – 9.

f(3) =  –5.

Then , (g – f)(3) = g (3 ) - f(3) .

Plugging the values

(g – f)(3) = 18 - (-5) .

(g – f)(3) = 18 + 5.

(g – f)(3) =  23.

Therefore,  (g – f)(3) =  23.

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this