If x+y =8 and x^2+y^2=36 find x-y

RPulvi asked Sep 15, 2023

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RPulvi asked Sep 15, 2023

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23 votes

(x + y)(x - y) = x^2 + y^2

8 (x - y) = 36

x - y = 36 / 8 = 4.5

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