One number is 2 more than another. The difference between their squares is 20. What are the numbers?

Question

Cristina Wagner

Mathematics

2 March, 19:55

One number is 2 more than another. The difference between their squares is 20. What are the numbers?

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Answers (1)

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Myron · Answer 1

let x=one number =

x-2 = another number

x² - (x-2) ²=20

x²-x²-4x+4=20

-4x=20-4

-4x=16

x=16/-4

x=-4

one number is - 4

x-2

-4-2

=-6

the another number is - 6