Question

if x‐y=3,xy=28, then let's find out the value of (x²+ý²)​

Answer 1

Answer:

Note:-

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

Substituting the values given -

${3}^{2} = {x}^{2} + {y}^{2} - 2(28)$

$9 = {x}^{2} + {y}^{2} - 56$

${x}^{2} + {y}^{2} = 65$

Answer 2

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