把下列各式因式分解:xy(x y)的2次方-4x的3次方y的3次方
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12.1)78²-22²=(78+22)*(78-22)=100*56=56002)1000²/(252²-248²)=1000²/【(25
1.原式=[2(x+y)+(x-y)][2(x+y)-(x-y)]=(3x-y)(x+3y)2.原式=9a^2b^4-6ab^2+1=(3ab^2-1)^23.原式=[(m/3)^2+n]^24.原式
4x的平方-12x的3次方=4x²(1-3x)(2)-x的平方y+4xy-5y=-y(x²-4x+5)
1,x(x-y)=8y(x-y)=3(x+y)(x-y)=13x的平方-y的平方=(x+y)(x-y)=132,x的平方-xy=8xy-y的平方=3x的平方-2xy+y的平方=8-3=5
2x-2y+3xy(x-y)=2(x-y)+3xy(x-y)=(x-y)(2+3xy)
x^2+2xy+y^2=x²+xy+xy+y²=(x²+xy)+(xy+y²)=8+3=11x²-y²=x²+xy-xy-y
(1)xy+ay-by=y(x+a-b)(2)3x(a-b)-2y(b-a)=3x(a-b)+2y(a-b)=(a-b)(3x+2y)(3)m^2-6m+9=m²-3m-3m+9=m(m-3
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xy-x²=x(y-x)
4xy²-4x²y-y³=-y(4x-4xy+y²)=-y(2x+y)²
(1).1.(x+18)^2=(22+18)^2=16002.(2a-b)^2=(2*1/2-5/4)^2=1/16(2).(2x-3)^2=0x=3/2(3).xy(a-b)^2=5*6^2=180
-xy^2+2xy-x=-x(y^2-2y+1)=-x(y-1)^2如果本题有什么不明白可以追问,如果满意请点击“选为满意答案”
解题思路:因式分解解题过程:varSWOC={};SWOC.tip=false;try{SWOCX2.OpenFile("http://dayi.prcedu.com/include/readq.ph
(1)原式=x(y^2+3y-10)-(y^2-4y+4)=x(y-2)(y+5)-(y-2)^2=(y-2)(xy+5x-y+2)(2)第二题观察一下,可以用(x+2)(x-4)与(x+3)(x-5
4x³y-9xy³=xy(4x²-9y²)=xy(2x+3y)(2x-3y)
结果为:xy(y+1)(y-1)过程:先提取公因式xy,则原式=xy(y^2-1),然后利用平方差公式可以得到原式=xy(y+1)(y-1)
一解:(1)原式=(x-1)(7x-7+4)=(x-1)(7x-3)(2)原式=(a-b)(x-y)(3)原式=(p-3)(6m-4n)(4)原式=(y+2)(1-20y-40)=(y+2)(-20y
1.x²+7x+10=(x+2)(x+5)2.x²-3xy-10y²=(x-5y)(x+2y)3.16x⁴-y⁴=(4x²+y²
(1)x^3+3x^2+3x+9=x^2(x+3)+3(x+3)=(x^2+3)(x+3)(2)2x^2+xy-y^2-4x+5y-6=(2x-y)(x+y)-4x+5y-6=(2x-y)(x+y)+
.=-24xy²z²(z-x-y)-32xyz(z-x-y)²+8xyz³(z-x-y)=xyz(z-x-y)(-24yz-32-8y²)打起来麻烦2