Question

If x+y = 5 and xy=3 find the value of (x+y)^2​

Answer 1

Step-by-step explanation:

given that,

x+y=5,xy=3

$(x + y) ^{2} = x ^{2} + y ^{2} + 2xy$

(5)²=x²+y²+2(3)

25=x²+y²+6

25-6=x²+y²

19=x²+y²

19 is the answer

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