(a-b)(c-b) (3x+y)(x-2y) (2a-5b)(a+5b)
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/03 04:41:55
(a-b)(c-b) (3x+y)(x-2y) (2a-5b)(a+5b)
(a-b)(c-b) (3x+y)(x-2y) (2a-5b)(a+5b)
(a-b)(c-b) (3x+y)(x-2y) (2a-5b)(a+5b)
如果是连续相乘,那么倒数第二步的结果是
(2a³c-2a³b+30ab³-3a²b²+20ab²c+3a²bc+25b³c-25b^4)(3x²-5xy-2y²)
(-x+y)(x-y) (3a+b)(-3a-b) (a-b+c)(a-b-c)
因式分解:x(a-b)(b-c)(c-a)-y(b-a)(c-b)(a-c)
(y-x)(a-b-c)+(x-y)(b-a-c) 因式分解等于多少?
速度解答 (y-x)(a-b+c)+(x-y)(b-a-c)
b(x-y)+c(y-x)=(x-y)( ) a(a+b)的平方+(b+a)的立方
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)
x-y)(a-2b+3c)-3(y-x)(2b-a-3c) 因式分解x-y)(a-2b+3c)-3(y-x)(2b-a-3c)分解因式
x+y-(2x-y)(x+y)=?12(a^2-b^2)^2-3(a^2+b^2)(a+b)^2等于多少(2a-b)(2a+3b)+3a(b-2a)=-(2a-b)( ),a(x-3)(5-x)+b(3-x)(x-5)=( )(x-3)(a+b)代数式15x^3y^3(x-y),6x^2y^2(y-x),-120x^3y^3(x-y)(x+y)的公因式是?a-b+k(b-a)=( )(k-1)a(b-c)+c-b=(b-c)
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+Y0麻烦带上解题过程...谢谢
如果A={(x,y)|x,y+2>0},B={(x,y)|2x+3y-6>0},C={(x,y)|x-4
因式分解a(x-y)+b(y-x)+c(x-y)
分解因式a(x-y)-b(y-x)+c(x-y)
分解因式 a(x-y)+b(y-x)+c(x-y)
因式分解,(a-b)(x-y)-(b-a)(x-y)(a-b)(x-y)-(b-a)(x+y)
(x+3+y)(x+3-y)=(3a+b-c)(3a-b+c)=(x+y-4)(x+y+4)=(a-2b-3)²=(x-y+2)²=
x和y互为倒数,xy+3=( ) A.4 B.x C.y
已知a+b>c,b+c>a,a+c>b求证a^3+b^3+c^3-a(b-c)^2-b(c-a)^2-c(a-b)^2-4abcc,b+c>a,a+c>b 所以不妨设a=x+y b=y+z c=z+x 其中x,y,z>0 则a^3+b^3+c^3-a(b-c)^2-b(c-a)^2-c(a-b)^2-4abc(化简消元)=-2(x^2y+xy^2+y^2z+yz^2+z^2x+zx^2+4xyz)c,b+c>a,a+c>b
(x+y)^2-z^=a^2-(b-c)^2=(x-y)^3-x+y=16(x+y)^2-25(x-y)^2=