Question

if x+y=8 and xy = 18 then x^2+y^2​

Answer 1

Answer:

x²+y²=28

Step-by-step explanation:

x+y=8

xy=18

(x+y)²=x²+y²+2xy

(8)²=x²+y²+ 2(18)

64=x²+y²+36

x²+y²=28

Answer 2

Answer:

28

Step-by-step explanation:

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