calculus
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The sum of two positive numbers is 100. Let one of the numbers be x and express the product P of the two numbers as a function of x.

x = first number
y = second number
x + y = 100
y = 100  x
P = x * y
P = x * ( 100  x )
P = 100 x  x ^ 2 
This is not the calculus of Newton. Please put the correct subject matter, if you want speedy and appropriate responses.

The sum of two positive number is 100.Let one of the number be x and express the product P of two number as a function of x