Question

if x+y=9 and xy=16, find the value of (x²+y²)
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Answer 1

Answer:

49

Step-by-step explanation:

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

(9)^2=x^2+y^2+2*16

81-32=x^2+y^2

49=x^2+y^2

hope it helps

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Answer 2

Answer:

Step by step explanation in attachment