Mathematics
Senior High
(ウ)の変形の仕方を教えて欲しいです！
私がすると白で書いたようになってしまいます、、
A5+2=artas-
-=A5+ A4
Aq
an+2=an+1+αn 300
(ウ)(イ)り,
as=a7+a6=(α6+as)+a6
= 2a6+as=2(as+a₁) + as
= 3a5+2a4=3(a₁ + a3)+2a4
=5a4+3a3=5(a3+ a₂)+3a3
1²6=8a3+5a₂=8(a2+a₁)+5a₂_0520
1342+8=13×2+8×1=34 (通り)
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