Mathematics
Senior High
数Ⅱの式と証明の問題です。分からないので教えて欲しいです💦
練習
22
次の等式を証明せよ。
2-b²=(a=b)²+3ab(a
a²-ab+b²-a
(3)(1+x)=1+x+x(1+x)+x(1+x)2
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