Two numbers that have a sum of 28 and a product of 160. What are the two numbers?

1 answer

x+y=28 ---->y = 28-x
xy=160

x(28-x) = 160
-x^2 + 28x - 160 = 0
x^2 - 28x + 160 = 0
(x-20)(x-8) = 0
x = 20 or x = 8

if x=20 or x=8

if x = 20 , y = 8
if x = 8 , y = 20

the two numbers are 20 and 8
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