Mathematics
Senior High
なぜルート6になってるんですか?
なぜ最後4になってるんですか?
(3) 2.x2-8.x+5=0
?山
(x-2)2-3=0
(x-2)²=
3
2
3
x2=±
2
76 ??
x=2±
2
??
4√6
IC
2
平方
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