Mathematics
Junior High
Resolved
2の(7)と(8)が分かりません、どなたか解説お願いします。
[2] 次の式を因数分解せよ.
(1) x² +7xy+12y²
(3) 12x² + 7x - 12
(5) a³ - 2a²b-9a + 18b
3
(7) x³ + x² − x − 1
(x + xy + y ) ( x
(2)
4a³b-9ab³
(4) 4x4 - 17x² +4
(6) 4a² + 2ab + bc − c²
(8) 2x² + xy − y²
xy + y )
+ 10x + 4y + 12
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ありがとうございます!とても助かりました!