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(c-a)²;-2√2bx+(a+c)=0△=8b²;-4(c-a)(a-c)=8b²;-4c²;+4a²;=4b²;+4(a²;+b²;-c²;)因為a²;+b²;=c²;所以a²;+b²;-c²;=0所以△=4b²;>0所以有兩個不同…
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