把下列各式因式分解:a的2次方-2a(b-c) (b c)的2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
2sina*cosa=(sina+cosa)²-(sin²a+cos²a)=a²-1所以sina*cosa=a²/2-1/2sin³a+co
(4a²+3b²)²
9a²-4(b+c)²=(3a+2b+2c)(3a-2b-2c)
1.2na的n次方;2.当n=2006时,为2X2006a的2006次方
a的2次方+(5a的2次方-2a)-2(a的2次方-3a)=a的2次方+5a的2次方-2a-2a的2次方+6a=4a的2次方+4a再问:化简下列各式。3(x的2次方-xy+y的2次方)-2分之一(2x
(1)-2分之1a²+2b²=-2分之1(a²-4b²)=-2分之1(a+2b)(a-2b)(2)a的3次方b-ab的3次方=ab(a²-b²
(1)原式=-(a-1)2;(2)原式=-x(x-y)2;(3)原式=(x+1)2(x-1)2;(4)原式=(x+y-x+y)2=4y2.
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).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
4a2减3=(2a)²-(√3)²=(2a+√3)(2a-√3)2a2减b2=(√2a)²-b²=(√2a+b)(√2a-b)不懂的还可以追问!满意请及时采纳!
(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+
1.5a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
一.好像是x^2-y^2不然没法分解.x^2-y^2=(x+y)(x-y).二.(a+b)^2-100=(a+b)^2-10^2=(a+b+10)(a+b-10).三.1-a^2-b^2=-(a^2+
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.(m+n)^4-2(m+n)²+1=[(m+n)²-1]²=[(m+n+1)(m+n-1)]²=(m+n+1)²(m+n-1)²2.a的