1.2a³-2a²b+8b-8a2.x³-3x²+43.x²-3xy+2y²-y-14.-26a²+52a5.a²-b²+2ab-c²6.9x²-24xy+16y²7.a²b(x-y)-ab(y-x)8.x²-7x-189.ab-1+a-b

来源：学生作业帮助网编辑：作业帮时间：2024/05/12 06:35:14

1.2a³-2a²b+8b-8a2.x³-3x²+43.x²-3xy+2y²-y-14.-26a²+52a5.a²-b²+2ab-c²6.9x²-24xy+16y²7.a²b(x-y)-ab(y-x)8.x²-7x-189.ab-1+a-b
1.2a³-2a²b+8b-8a
2.x³-3x²+4
3.x²-3xy+2y²-y-1
4.-26a²+52a
5.a²-b²+2ab-c²
6.9x²-24xy+16y²
7.a²b(x-y)-ab(y-x)
8.x²-7x-18
9.ab-1+a-b

1.2a³-2a²b+8b-8a2.x³-3x²+43.x²-3xy+2y²-y-14.-26a²+52a5.a²-b²+2ab-c²6.9x²-24xy+16y²7.a²b(x-y)-ab(y-x)8.x²-7x-189.ab-1+a-b
1.2a³-2a²b+8b-8a
=2a^2(a-b)-8(a-b)
=(a-b)(2a^2-8)
=2(a-b)^2(a+b)
2.x³-3x²+4
=x(x^2-4)-(x^2-4)
=(x+2(x-2)(x-1)
3.x²-3xy+2y²-y-1
=(x-1.5y)^2-(0.5y)^2-y-1)
=(x-1.5y)-(0.5y+1)^2
=(x-y+1)(x-2y-1)
4.-26a²+52a
=26a(a+2)
6.9x²-24xy+16y²
=(3x-4y)^2
7.a²b(x-y)-ab(y-x)
=a^2b(x-y)+ab(x-y)
=(x-y)(a+1)*ab
8.x²-7x-18
=(x-3.5)^2-20.25
=(x+1)(x-8)
9.ab-1+a-b
=a(b+1)-(b+1)
=(b+1)(a-1)

有本《奥赛经典》，湖南师大出的，相当不错物理这个《全国初中应用物理知识竞赛辅导》

ab³-2a²b²+a³b 2(a³+b³+c³)>a²(b+c)+b²(a+c)+c²(a+b) ab²-2a²b-a³,因式分解, (-2a)²*(-9a²b³)= 计算分式(a²b³/-2c)³÷(ab²/4c²)²×(1/a+b)²a²b³ ab² 1(----)³÷(----)²×(----)²分数线-2c 4c² a+b 化简:(b²/2a²）²÷（4b³/7-a）×（b²/a）³ 哎.这卷子真难啊.1.（-9)³*（-2/3）的六次方*(1-1/3)³2.(-a²)²*（-2a³）²3.-（a[4次方]b³）³*（-a²b³）²*（-a²b³）[5次方]4.5a²b*（ab³)³5.（-2a³+ 6a³b²-4a²b²+2ab² 分解因式3ax²-3ay²ax²-4ay² 2a³b-4a²b²+2a²b³ 2a³b×（-3ab）³=?a²+4b²=（a-2b）²+? 化简b／a－b＋b³/a³－2a²b＋ab²÷ab＋b²／b²－a² 因式分解：-a³b+2a²b-ab 因式分解1.a²-b²-a³-b³ 2.a³-b³-a²+b² 3.a³+3a²b+3ab因式分解1.a²-b²-a³-b³ 2.a³-b³-a²+b² 3.a³+3a²b+3ab （3a²）³*（4b³）²/(6ab)^2 （3a²）³*（4b³）²/(6ab)^2 解几个因式分解题吧1.2x²-4x 2.8m²n+2mn 3.a²x²y-axy² 4.3x³-3x²-9x 5.-24x²-12xy²+28y³ 6.-4a³b³+6a²b-2ab 7.-2x²-12xy²+8xy³ 8.-3ma³+6ma²-12ma (a&sup4+b&sup4)(a²+b²)与(a³+b³)² 因式分解8A³B²+6A³B²C-12AB³C