Question

$if \: {x}^{2} + {y}^{2} = 34 \: and \: xy = 10 \times \frac{1}{2} \: \: find \: 2 {(x + y)}^{2} + {(x - y)}^{2}$
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Answer 1

Answer:

xy (2) /:x+(y) -

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