Mathematics
Senior High
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2枚目答えです。
20
5. 次の式を因数分解せよ。
(1) x³-2x²y+xy-2y²
(3)
2x²+8ax+6a²-x+a-1
(2) x²+2xy-3y²–5x+y+4
(4) (a+b+c) (ab+bc+ca)-abc
→p.20, 21.
\\ac+bd)+(ad+bc)}{(ac+bd)-(ad+
5. (1) (x²+y)(x-2y) (2) (x-y-1)(x+3y-4)
x »)+²x(5+6to)
(3) (x+3a-1)(2x+2a+1)+(4) (a+b)(b+c)(c+a)
[(1) x²(x-2y)+y(x-2y) (2) x²+(2y-5)x-(y+1)(31
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