SOLUTION: the sum of two numbers is 16 and their difference is 5. find the difference of their squares?

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Question 785134: the sum of two numbers is 16 and their difference is 5. find the difference of their squares?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
let the numbers be x & y m x>y
x+y=16
x-y=5
(x+y)(x-y) 16*5
x^2-y^2= 80