﹙2x²+ax-y+6﹚-﹙bx²-3x+5y-1﹚的值与x无关,求代数式½a²-2b&su

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﹙2x²+ax-y+6﹚-﹙bx²-3x+5y-1﹚的值与x无关,求代数式½a²-2b&su
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﹙2x²+ax-y+6﹚-﹙bx²-3x+5y-1﹚的值与x无关,求代数式½a²-2b&su
﹙2x²+ax-y+6﹚-﹙bx²-3x+5y-1﹚的值与x无关,求代数式½a²-2b&su

﹙2x²+ax-y+6﹚-﹙bx²-3x+5y-1﹚的值与x无关,求代数式½a²-2b&su
﹙2x²+ax-y+6﹚-﹙bx²-3x+5y-1﹚
=(2-b)x²+(a+3)x-6y+7
与x无关
2-b=0 b=2
a+3=0 a=-3
1/2a²-2b²
=9/2-8
=-7/2

﹙2x²+ax-y+6﹚-﹙bx²-3x+5y-1﹚的值与x无关,求代数式½a²-2b&su 计算4m²(2x-3y)²-m²(3x-2y)²和x²﹙x-y﹚+y²﹙y-x﹚的值 计算:(B-1)(1+B)(B²-1),(a-2b+3c)(a+2b-3c)分解因式:a²x²+16ax +6425(x+y)²-16(x-y)²x²-6x+9-Y²(a²+b²-1)²-4a²b² 求值:【(x+2y-3∕2)(x-2y+3∕2)+2y(2y-3)+(2ˆ-2∕3)】 1.(ax+by)²+(bx-ay)²2.(x²-x)²-4(x²-x-1)3.4(x+y)²-9(x-y)²4.(a+b)(a-b)+4(b-1)5.x²+4xy+4y²-2x-4y-36.(x+1)(x+2)(x+3)(x+4)+17,3x²-11x+10 求几道因式分解1.(ax+by)²+(bx-ay)²2.(x²-x)²-4(x²-x-1)3.4(x+y)²-9(x-y)²4.(a+b)(a-b)+4(b-1)5.x²+4xy+4y²-2x-4y-36.(x+1)(x+2)(x+3)(x+4)+17,3x²-11x+10 因式分解啊啊啊!要过程1. x²y²+1-x²-y²+4xy2. 2.x²-y²+2x-4y-33. x的4次方+x²-2ax-a+14. (x+y)的4次方+x的4次方+y的4次方5. (a+b+c) ³ -(a³+b³+c&su 关于初中整式的加减的数学题,十万火急!若代数式x²-ax+2y-b+bx²+3x-3y-1的值与字母x的取值无关,求代数式3(a²-ab-b²)-(4a²-ab+b²)的值, 3y/2x+2y+2xy/x²+xy 2x/x²-64y²-1/x-8y (1/a+1/b)²÷(1/a²-1/b²) (3x&su3y/2x+2y+2xy/x²+xy 2x/x²-64y²-1/x-8y (1/a+1/b)²÷(1/a²-1/b²) (3x²/4y)²×2y/3x+x²/2y²÷2y²/ 使(ax²-2x+y²)-(-x²+bxy+2y²)=5x²-9xy+cy²成立的a,b,c的值依次是? 分解因式①x³-3x+2;②3x²-11xy+6y²-xz-4yz-2z²;③a²(b-c)+b² (1)、求满足等式4x²-9y²=31的x、y的正整数解 (2)、已知实数a、b满足a²+b²-4a的值满足a²+b²-4a-6b+13=0,求a²+b²的值 1.使分式(x²-y²/a²x-a²y)×[ax+ay/(x+y)²]的值等于5的a的值是() A 5 B 2.若1/a:1/b:1/c=2:3:4 则a:b:c=_____3.关于x的不等式组 2x<3(x-3)+1 ① (3x+2)/4>x+a ② 有 设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y,若|x-2y|+(y+3)²=0,且B-2A=5a,求A的值.求求你们了! 求这几道因式分解的答案 a²-4a+4 4b²+4b-1 a²+ab+b² x²+12x+36 -2xy-x²-y² a²+2a+14x²+4x+1 ax²+2a²x+a3次方 -3x²+6xy-3y² (3x+2y)(9x²-6xy+4y²﹚化简,求方法 因式分解x²+xy-6y² a²-ab+ac-bc2ax-10ay+5by-bx3ax+4by+4ay+3bxm²+5m-mn-5nx²-y²+ax+aya²-2ab+b²-c²x³+x²y-xy²-y³4a²-b²+6a-3b9m²-6m+2n-n²x²-y²-z²+2yzx³-x²y-xy²+y³ 分解因式 a²-b²+4(b-1) m²+7m-18 x²-2x-15 x²y²-7xy+10