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9.13提取公因式法(2)的难题比较多的题目 答得好加100分.填空题:4.-mx(m-x)(x-n)+mn(m-x)(n-x)的公因式是5.5m(x-y)²-10m²(y-x)²的公因式是6.12a^3(m-n)^3+10a²(n-m)^3的公因式是7.a(x-4)(y+3)+b(4-

题目详情
9.13提取公因式法(2)的难题
比较多的题目 答得好加100分.
填空题:
4.-mx(m-x)(x-n)+mn(m-x)(n-x)的公因式是
5.5m(x-y)²-10m²(y-x)²的公因式是
6.12a^3(m-n)^3+10a²(n-m)^3的公因式是
7.a(x-4)(y+3)+b(4-x)(3+y)=(x-4)(y+3)(_____)
8.将x(x+y)(x-y)-x(x+y)²分解因式得
9.(x+y)^3-y(x+y)平方+x²(y+x)=(_____)(2x+y)
10.-35x(x+y)-42(x+y)=(_____)(x+y)(______)
11.把下列各式因式分解:
1.2x(a²+b²)-3y(a²+b²)
2.(a-b)²-(a-b)(a-c)+(a-b)(b+c)
3.m(a-b)(x+y)-n(b-a)(y+x)
4.x(x-y-z)+y(z-x+y)-z(y-x+z)
5.8(2x+y)^3-12(2x+y)²
6.xy(x-y)²-yz(y-x)²+xz(x-y)²
7.35ab(x-y)²-25a²b²(y-x)²+10ab^3(y-x)^3
8.a(x-y)^2n-a²(y-x)^2n+1+a^3(x-y)^2n
9.3x²(a+3)-4x²y(a+3)
▼优质解答
答案和解析
4.m(m-x)(x-n)
5.5m(x-y)²
6.2a²(n-m)^3
7.a-b
8.2x²(x+y)
9.x²+xy
10.- ,35x+42
1.合并同类项
(2x-3y)(a²+b²)
2.公因式是a-b,合并
(a-b)(a-b-a+c+b-c)=0
3.公因式是(a-b)(x+y),合并
(a-b)(x+y)(m+n)
4.公因式是y+z-x
-x(y+z-x)+y(y+z-x)+z(y+z-x)=(y+z-x)(y+z-x)=(y+z-x)的平方
5.公因式是4(2x+y)²
4(2x+y)²(2(2x+y)+3)=
4(2x+y)²(4x+2y+3)
6.公因式是(x-y)²,合并
(x-y)²(xy-yz+xz)
7.公因式是5ab(x-y)²
5ab(x-y)²(7-5ab+2b²(y-x))
8.公因式是a(x-y)^2n
a(x-y)^2n(1-a+a的平方)
9.公因式是x²(a+3)
x²(a+3)(3-4y)