(-x+y)(x-y) (3a+b)(-3a-b) (a-b+c)(a-b-c)

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/28 12:32:49
(-x+y)(x-y) (3a+b)(-3a-b) (a-b+c)(a-b-c)
xTn@PʖP# !iJܦ)i!j0c;W^{ 5 V;{<sFBfZ(O ƭKsd]"2p_‹E\FC/ΗY Al8bENz ?`1HVjXlvC:K1Br?q@{5k۫ n X_Ce1^#[D#zz;>i1&ɕTf.ô?\OZqt6 ?љZ

(-x+y)(x-y) (3a+b)(-3a-b) (a-b+c)(a-b-c)
(-x+y)(x-y) (3a+b)(-3a-b) (a-b+c)(a-b-c)

(-x+y)(x-y) (3a+b)(-3a-b) (a-b+c)(a-b-c)
(-x+y)(x-y)
=[-(x-y)](x-y)
=-(x-y)²
=-(x²-2xy+y²)
=-x²+2xy-y²

(3a+b)(-3a-b)
=(3a+b)[-(3a+b)]
=-(3a+b)²
=-(9a²+6ab+b²)
=-9a²-6ab-b²

(a-b+c)(a-b-c)
=[(a-b)+c][(a-b)-c]
=(a-b)²-c²
=a²-2ab+b²-c²




很高兴为您解答,祝你学习进步!【学习宝典】团队为您答题.
有不明白的可以追问!如果您认可我的回答.
请点击下面的【选为满意回答】按钮.
如果有其他问题请另发或点击向我求助,答题不易,请谅解,谢谢!

的地方地方纷纷大幅度反对疯疯癫癫奋斗奋斗奋斗奋斗奋斗奋斗奋斗分

(-x+y)(x-y) (3a+b)(-3a-b) (a-b+c)(a-b-c)=(x-y)平方(3a+b)平方【(a-b)平方-c平方】=

太容易了(-x+y)(x-y)
=[-(x-y)](x-y)
=-(x-y)²
=-(x²-2xy+y²)
=-x²+2xy-y²

(3a+b)(-3a-b)
=(3a+b)[-(3a+b)]
=-(3a+b)²
=-(9a²+6ab+b²)<...

全部展开

太容易了(-x+y)(x-y)
=[-(x-y)](x-y)
=-(x-y)²
=-(x²-2xy+y²)
=-x²+2xy-y²

(3a+b)(-3a-b)
=(3a+b)[-(3a+b)]
=-(3a+b)²
=-(9a²+6ab+b²)
=-9a²-6ab-b²

(a-b+c)(a-b-c)
=[(a-b)+c][(a-b)-c]
=(a-b)²-c²
=a²-2ab+b²-c²

收起

(x+y)²+2(y-x) 因式分解 怎么弄 我这还有几道题(x+y)²-(x+y)(x-z)+(x+y)(y+z)X(X-a)(x-b)-y(a-x)(b-x)x(x+y)(x-y)-x(x+y)²(2a+b)(2a-3b)-3b(2a+b)(a+b)²-9(a-b)²(a²+b²)²-a²b²9(x-y)-y& 因式分解,(a-b)(x-y)-(b-a)(x-y)(a-b)(x-y)-(b-a)(x+y) 因式分解:(1)、(2a-3b)(7x+y)+(x-5y)(3b-2a)(2)、(x+y)^3(x+y)^2-(-x-y) (2a+b)(2a-3b)+3a(2a+b)和x(x+y)(x-y)-x(x+y)²4a(x+y)-6x-6y和啊a(a-b)-ab+b² [1]a(x-2y)-b(2y-x)+d(2x-4y) [2]x平方-2xy+y平方-2x+2y+1 【3】一(a-x)(a-y)-x(y-a)(X-a)[1]a(x-2y)-b(2y-x)+d(2x-4y) [2]x平方-2xy+y平方-2x+2y+1【3】一(a-x)(a-y)-x(y-a)(X-a) 分解因式,急求! 如果A={(x,y)|x,y+2>0},B={(x,y)|2x+3y-6>0},C={(x,y)|x-4 如何解因式分解x(x-y)(a-b)-y(y-x)(b-a) 通分x/a(x-y),y/b(y-x) 通分 a/(y-x)的平方,b/(x-y)*(x+y) 8a(x-y)平方-4b(y-x) 把(x-y),(a+b)作为一个因式,合并同类项:3(x-y)-9(x-y)-8(x-y)+6(x-y)-1 (x+y)^2-z^=a^2-(b-c)^2=(x-y)^3-x+y=16(x+y)^2-25(x-y)^2= 已知有理数A,B,X,Y满足A+B ≠0,且(A+B):(A-B)=(2X+Y):(X-y) 那么A:(A+B)=?A.3X:(2X+Y) B.3X:(4X+2Y)C.X:(X+Y)D.2X:(2X+Y) 关于X、Y的方程组{X+Y=A+1,X-Y=3A-3的解X>Y,那么()A:A>1B:A (x-y)³-x+y (a+b)²-(a-b)² (x-3)³-4x+12 1(x-3x-1)(x+3y-1)2(3x-2y+1/4)²3(a+b)²-(a-b)²4 [2x²-(x+y)(x-y)][(-x-y)×(y-x)+2y²],其中x=1 y=25[(0.5x-y)²+(0.5x+y)²](0.5x²-2y²)6(a+3b)²-2(a+3b)(a-3b)+(a-3b)²7 a(m+n)-b(m+n)(a+b)(a-b)-(b+a)m(a-3)-n(3-a)x(x-y)+y(y-x) 3x(a-b)+2y(b-a) 分解因式:(1)25x²-y²; (2)(a-b)(x-y)+(a-b)(x+y) (3)(x+2y)²-8xy