The cost of one apple from the equation is (x-4).
Division of functions
From the question, we have that the cost of (x-5)apples is Rs.(x^2 -9x +20). We are to get the cost of 1 apple.
The cost of one apple is given as:
[tex]cost \ of \ one \ apple = \frac{x^2 -9x +20}{x-5}\\ cost \ of \ one \ apple=\frac{x^2-4x-5x+20}{x-5} \\cost \ of \ one \ apple = \frac{x(x-4)-5(x-4)}{x-5} \\cost \ of \ one \ apple =x-4[/tex]
Hence the cost of one apple from the equation is (x-4).
Learn more on division of polynomial here: https://brainly.com/question/24662212
