Question

if x square + y square equal to 13 and xy equal to 2 then what is the value of x-y
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Answer 1

Step-by-step explanation:

(x-y) ²= x²-2xy+y²

(x-y) ²=13-2(2)

(x-y) ²= 13-4

(x-y)²= 9

x-y= 3

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