Math, asked by ts9530880, 1 day ago

x+y=5, xy=7; x^2 + y^2 =?

Answers

Answered by harshithsaivemula14

0

Answer:

Step-by-step explanation:

[x+y]^2 = [x-y]^2 + 4xy

[5]^2 = [x-y]^2+4[7]

25=[x-y]^2+28

x^2+y^2-2[7] = -3

x^2+y^2=11

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