√x + √y = 26 , √x - √y = 2 then x × y
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√x + √y = 26 — (i)
√x - √y = 2 —(ii)
Adding the results,we get
√x + √y = 26
√x + √y = 26 √x - √y = 2
———————
2√x = 28
√x =28/2
√x =14
Putting √x=14 in eq.(ii),we get
√x - √y = 2
14‐√y =2
‐√y =2–14
‐√y = ‐12
√y =12