The sum of two numbers x and y is 82. Find the maximum value of its p. Where p = xy

x + y = 82

nilai kali maksimal = 82/2 = 41

p = xy = (41×41) = 1681

Bahasa Indonesia
untuk membuat hasil kali tertinggi
maka selisih x dan y harus sekecil mungkin
selisih terkecil = 0
berarti x = y
x + y = 82
x + x = 82
2x = 82
x = 82:2
   = 41
y = 41

P = xy
    = 41 x 41
    = 1681



Bahasa Inggris (In English)
we wanted to make the highest possible of the product
which means the difference of x and y must be as least as possible
smallest difference = 0
which means x = y
x + y = 82
x + x = 82
2x = 82
x = 82:2
   = 41
y = 41

P = xy
    = 41 x 41
    = 1681