Mathematics
Senior High
2aどこから出てきたのか分かりません
教えてください
の
24h9ihGニ4、ー。12+c= お 45と=C, 5一=D とおくと
(ほ式)=48C+ 4CD+ 4Dg- BC
48(C+の+Cpが4ー お) 248+Cの)
=24|(e+0+の(一 ー6圭0上の(9一の上の)(@十5一6)
=2e[((2+o*ーg引Tl27ー(6-の八
=2g((2+の(5の條
、=24((》8+9の(66)((6寺9の-》⑫-引
=2g・22・2c =820c ! K
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