Question

if x+y = -4, xy=2 then the value of x²+y² is​

Answer 1

Answer:

Step-by-step explanation:

Answer:

x-y = 7 …(1)

xy=9 …(2)

Square (1) to get

x^2–2xy+y^2 = 49, or

x^2+y^2 = 49+2xy = 49 +(2*9) = 49+18 = 67. Answer

Answer 2

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