Mathematics
Senior High
一枚目と二枚目の答え方が違うんですが、どちらが正しいんですか？？
どちらも同じ問題集の回答です！
6
-3TRIAL数学IⅡ
2(xー1)
21 (1)(与式)=_ 2x-1)
81
(2xー2) + (3x+3)
(x+1Xx-1)
5x+1
(x+1xー1)
24で
5x+(
ドーレ
-3Xx+2)
(与式)=(X+1) +(x-1)
2x
4x3
x?+1
x*+1
参考
0
2x
2x
4x3
x?-1
x?+1
2x(x?+1)+2x(x?-1)
(x?-1)(x?+1)
x*+1
4x3
x*+1
26
4x3
4x3
2
xー
-1
x*+1
大山 08
4x(x+1)+4x(x*-1)
(x-1(x*+1) Dlxー!
8x?
(2x+3)
-1(x+2)
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