find two numbers whose sum is 20 and whose product is a maximum.
the first number is X
the second number is 20-x
3. The solution
x=-b/2a = -20/2(-1) = 10
20 - x =20 -10 = 10
the numbers are 10 and 10
i just dont get why / how you know to put x and 20 - x and why you would use the axis of symmetry to find the numbers
and sry mods i posted originally in the wrong thread.