4 less than 8 is a number N
8 - 4 = n
or
n = 8 - 4
The inverse of this function is f(x) = 
To find the inverse of any function, start by switching the x and f(x) term. Then solve for the new f(x). The result will be the inverse function. The step-by-step process is below for you.
f(x) =
----> Switch the x and f(x)
x =
----> Muliply both sides by 3
3x = -15 + 4f(x) ----> Add 15 to both sides
3x + 15 = 4f(x) ----> Divide both sides by 4.
f(x) = 
Answer:

Step-by-step explanation:
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![\dfrac{8}{5} - \left[-\dfrac{2}{3}\right]](https://tex.z-dn.net/?f=%5Cdfrac%7B8%7D%7B5%7D%20-%20%5Cleft%5B-%5Cdfrac%7B2%7D%7B3%7D%5Cright%5D)




Just follow this operation.
Find the two perfectly squared factors the multiple to your number.
Take the square root of those perfect factors then multiple them.