Mathematics
Senior High
②を①に代入した後の変形がわかりません。
(1)
(2)
より
x-x-1=0 ...... ① 1
x=1+√5
x=z+
2
を①に代入して,
1
z²+2+
(2+1/2)-(2+12/2) -1=0
1)² (²
2+2+1/12/23-2-12-1=0
(2)
また,②より,
両辺にを掛けて整理して
2²-2³ +2²-2+1=0
z2-xz +1=0B
......
(3)
A
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