3a^4x-4b^4y+3b^3x-4a^3y因式分解
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(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
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)
因式分解:a(x-y)^2+b(y-x)^3 4(x-y)^2+8(y-x)(x+y)1.a(x-y)^2+b(y-x)^3 2.4(x-y)^2+8(y-x)(x+y)
化简;6(a-b)(x-y)²-3(b-a)(x-y)^4
集合A={y/y=1-x-4/x},B={X/X^2-(3+a)X+3a
集合A={y|y=1-x-(4/x)},B={x|x^2-(3+a)x+3a
2x/x+y+2y/x+y a/a+b+b/a-b 1/3x²+2/4y-5/6xy解出来快
(3x^/4y)^*2y/3y+x^2y^÷2y^/x 还有一个 (a+b/a-b)^*(2a-2b/3a+3b)-a^/a^-b^÷a/b
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)³-x+y (a+b)²-(a-b)² (x-3)³-4x+12
A={x|y=-4x+6},B={x|y=5x-3},求A∩B.
单项式A,B满足等式2x(A-3x)=4x的平方y+B,求A,B
几道 数学题急啊 对了再加20分(x+y)^2-(x+y)^3(x-y)^2-(x-y)^3 (x-y)^2-(y-x)^32(x-y)-3(y-x)^24ab(a+b)^2-6a^2b(a+b)(x+y)(x-y)-(x+y)^28a(x-y)^2-4b(y-x)a=-5 a+b+c=-5.2求代数式a^2(-b-c)-3.2a(c+b)的值
若-4x^a y+x^2 y^b=-3x^2 y,则a+b等于?
A={y|y=-4x+6},B={x|y=5x-3},求A∩B.
(1). (a+b)-(a+b)^2 (2).(y-x)^2-2(x-y) (3).2m(a-3)(1). (a+b)-(a+b)^2(2).(y-x)^2-2(x-y)(3).2m(a-3)+4(3-a)(4).4(y-x)^3-2(x-y)^2(5).(a+b)^2+2(b+a)(6).(a-b)^3-(b-a)^4
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
x^2(x-y)+(y-x)(x^2+y^2)^2-4x^2 y^22a^2b^3-4a^3b+8a^2b^24(a+b)^2-4(a+b)+1