1.3a(5a-2b) 2.(x-3y)(-6x) 3.化简x(x-1)+2x(x+1)-1.3a(5a-2b) 2.(x-3y)(-6x)3.化简x(x-1)+2x(x+1)-3x(2x-5).
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1.3a(5a-2b)2.(x-3y)(-6x)3.化简x(x-1)+2x(x+1)-1.3a(5a-2b)2.(x-3y)(-6x)3.化简x(x-1)+2x(x+1)-3x(2x-5).1.3a(
1.3a(5a-2b) 2.(x-3y)(-6x) 3.化简x(x-1)+2x(x+1)-1.3a(5a-2b) 2.(x-3y)(-6x)3.化简x(x-1)+2x(x+1)-3x(2x-5).
1.3a(5a-2b) 2.(x-3y)(-6x) 3.化简x(x-1)+2x(x+1)-
1.3a(5a-2b) 2.(x-3y)(-6x)
3.化简x(x-1)+2x(x+1)-3x(2x-5).
1.3a(5a-2b) 2.(x-3y)(-6x) 3.化简x(x-1)+2x(x+1)-1.3a(5a-2b) 2.(x-3y)(-6x)3.化简x(x-1)+2x(x+1)-3x(2x-5).
15a²-6ab
1、15a^2-6ab
2、-6x^2+18xy
3、x^2-x+2x^2+2x-6x^2+15x
=-3x^2+16x
合并同类项 求下列各式的值 1.3a+b-(b-a)^2+a-5b+2(a-b)^2,其中a-b=-22.2(x+y)-2/3(x-y)+1/4(x+y)+2/3(x-y)+2/3(x-y),其中x=-1/2,y=-3/2.
因式分解:(1)、(2a-3b)(7x+y)+(x-5y)(3b-2a)(2)、(x+y)^3(x+y)^2-(-x-y)
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3x(a-b)+2y(b-a)
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)
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(1)(x+y)^2-(x+y)^3(2)(x-y)-(x-y)^3(3)(x-y)^2-(y-x)^3(4)2(x-y)-3(y-x)^2(5)4ab(a=b)^2-6a^2b(a+b)(6)(x+y)^2(x-y)+(x+y)(x-y)^2(7)2a(a-3)^2-6a^2(3-a)+8a(a-3)(8)24xy^2z^2(x+y-z)-32xyz(z-x-y)^2+8xy(z-x-y)(9)(a-b)(b-a)^n(b-a)^2n-1 [两解)(10)2^2=3,2^b
(x+y)^2+2x+2y,(a-b)^3-2b(b-a)^2.
1) (2x+5y)(2x-5y)(-4x^2-25y^2) 2) [(x+y)(x-y)-(x-y)^2+2y(x-y)]÷4y 3)整式乘除 3)(a+b)^2-2a(b+1)-a^2b÷ab 4)(a^2+3)(a-3)-a(a^2-2a-2)
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1,(x+y)²-(x+y),2,(x-y)²-(x-y)³2,(x-y)²-(y-x)³ 用分解公因式算(1).2(x-y)-3(y-x)²(2).4ad(a+b)²-6a²b(a+b)(3).(x+y)²(x-y)+(x+y)(x-y)²(4).2a(a-3)²-6a²(3-a)+8a(a-3)(5)2
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(1)x-y/x-2y÷x^2-y^2/x^2-4xy+4y^2(2)3a/a+b - 3b/a+b(3)x+3/x^2-9 + 3/x-3(4)x^2/x+y - x+y(5)(a^2/a-3 + 9/3-a)÷a+3/a
1.(a-2+b)(a+2+b)2.(x^5y^3-2x^y^2+3/4x^2y^2)/1/12x^2y^2