把下列各式因式分解-2x的三次方 4x的平方-6x
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12.1)78²-22²=(78+22)*(78-22)=100*56=56002)1000²/(252²-248²)=1000²/【(25
27x³+64=0x³=-64/27x³=(-4/3)³x=-4/3
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
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你问的有3道题目吧.(1)x+√3-1=1-2+2√3x=√3(2)2x=±9x=±9/2(3)x+10=-3x=-13
12y的四次方-3y²=3y²(2y+1)(2y-1)x的三次方-64x=x(x+8)(x-8)4(3x+y)的平方-(2x-y)的平方=(8x+y)(4x+3y)2xy-x的平方
4xy²-4x²y-y³=-y(4x-4xy+y²)=-y(2x+y)²
1.x(x-y)^2-y(y-x)^2=(x-y)^2*(x-y)=(x-y)^32.18(a-b)^3-12b(b-a)^2=(a-b)^2*(18a-18b-12b)=6(a-b)^2*(3a-5
1.用平方差公式:(z²-x²-y²)²-4x²y²=[(z²-x²-y²)-2xy][(z²-x&
(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
36x平方-5=(6x+√5)(6x-√5)3x平方-5y平方=(√3x+√5y)(√3x-√5y)x三次方-7x=x(x²-7)=x(x+√7)(x-√7)
(2m+3n)(2m-n)-4n(2m-n)=(2m-n)(2m+3n-4n)=(2m-n)(2m-n)=(2m-n)^2(x+y)^2(x-y)+(x+y)(y-x)^2=(x+y)(x-y)(x+
1.x的平方-y的平方+x+yx^2-y^2+(x+y)=(x+y)(x-y)+(x+y)=(x+y)(x-y+1)2.x的三次方-x乘y的平方+x+yx^3-xy^2+(x+y)=x(x^2-y^2
1.5a平方2b(x-y)的六次方-30ab2(y-x)平方=10a²b(x-y)^6-30ab²(x-y)²=10ab(x-y)²[a(x-y)^4-3b]2
1)x的二次方-四分之一=(x+1/2)(x-1/2)(2)x的三次方-2x的平方+x=x(x²-2x+1)=x(x-1)²(3)a的三次方+a的二次方-(a+1)=a²
1、9a²-4b²=(3a)²-(2b)²=(3a+2b)(3a-2b)2、4x²-25y²=(2x)²-(5y)²=(
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)(a²+1)(a+1)(a-1)(2)(3x-2)(3x-4)(3)(x+2)(x-2)(1-2x)(4)x(2y-3z)²(z+y)(z-y)
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)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)+