Question

If x - y = 15 and xy = 30 then find the x^2 +y^2.​

Answer 1

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Use the identities you already know in different ways.

Answer 2

Answer:

x-y= 15

xy= 30

to want x&y is 15 and xy is 30

17-2= 15

17×2= 34

so x²+y²

x(15)²+y(34)²

15×15=225

34×34=1156

so we add 225+1156

so the answer is 1381

Step-by-step explanation:

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