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Question Number 207919 by efronzo1 last updated on 30/May/24
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Commented by Frix last updated on 30/May/24
a2+b2+c2=0∨15
Answered by mr W last updated on 30/May/24
a=b=c=0isasolutionfora≠0,b≠0,c≠0:(ii)×(iii):bc=bc(a+2)(a−2)⇒(a+2)(a−2)=1⇒a2=5a=b2(a−2)⇒b2=aa−2=a(a+2)=a2+2ac2=b2(a−2)2=a(a−2)=a2−2aa2+b2+c2=a2+a2+2a+a2−2a=3a2=15⇒a2+b2+c2=0or15
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