Mathematics
Senior High
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式変形を教えてください
+
+7 2√2-12√2 +1
(2√2+1)+(2√2-
(2√2-1)(2√2+1
2 2(b+7)+2(b+3)
+7
(b+3)(b+7)
4(6+5)
b²+106+21
4.4√2 _ 4√201
7+21
7
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