Mathematics
Junior High
Resolved
単元名→式の展開と因数分解 式の乗法・ 除法
回答と書く順番が違っても正解になりますか?
(14) (a-b-5)(a-26-5)
a-5をMとすると,
(M-b)(M-26)
=M-36M+26°
=(a-5)-36(a-5)+26°
=a-10a+25-3ab+156+26°
30
a°-10a+25-3ab+156+26°
127
(14)(aーb-5)(a-26-5)
ら4
ベー2ab-5a-abt2分+5h30l0b
t25
ベー3ab-l0atf2/415bt25
3年(啓) 13
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