Mathematics
Senior High
2行目から3行目の式変形が分かりません。教えてください。
sg
ョューニセの一3z9(ヶ十9 を用いると,
(ax) = (6+の一3gが(ogすの上どー3g6c
ニ (e+の8のー3g2(4十の)
= ((o@+の+e8一3(6十のet(Z二のgg ー32(o+5+d
ニ (2二5寺の{(2二5十c)2ー3(々十のc一322)
=(g+6二の)(g2填が十c2一gの一のc一co)……(答)
加重 16 科jo)
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