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If c & d=c2+d2-4, then 2 & 1 = ?
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If c & d=c2+d2-4, then 2 & 1 = ?

User Bendik Knapstad
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Just plug it in:

c & d = c² + d² - 4
2 & 1 = 1² + 2² - 4

= 1 + 4 - 4 = 1
User Gorchestopher H
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