Question

divide the mumber 20 into two parts such that their product is maximum.

Answer 1

this is the answer of your question

Answer 2

Let one part = x

other part = (20-x)

their product, p = x(20-x) = 20x - x²

For the product, p to be maximum

So, product is maximum when we divide 20 into 2 parts as (10,10).

Note: If you want to show that dividing 20 into (10,10) yield