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If

a = √(4 - √(5 - a))
b = √(4 + √(5 - b))
c = √(4 - √(5 + c))
d = √(4 + √(5 + d))

Determine the value of the product abcd.
(No Solution Yet, 3 Comments) Submitted on 2025-03-05 by Danish Ahmed Khan   
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