(1/3xy)²*(-12x²y²)÷(-4/3x³y)

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(1/3xy)²*(-12x²y²)÷(-4/3x³y)
(1/3xy)²*(-12x²y²)÷(-4/3x³y)

(1/3xy)²*(-12x²y²)÷(-4/3x³y)
(1/3xy)²*(-12x²y²)÷(-4/3x³y)
=1/9*x²y²*(-12x²y²)÷(-4/3x³y)
=[1/9*(-12)÷(-4/3)]*x^(2+2-3)*y^(2+2-1)
=[1/9*12÷4/3]*x*y³
=[4/3*3/4]*x*y³
=xy³

(1/3xy)²*(-12x²y²)÷(-4/3x³y) 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 12x²+4x-1 x²-(a+b)xy+aby² xy-1+x-y x²-(2a-1)x+a²-a 2x²+xy-y²-4x+5y-6 5x²+4x-1 x²-2x-1 y²+2xy-15x²3x²+5xy-2y²+x+9y-4 x²-5z+3 3x²+4xy-y²第三个和第四个连一 整式乘法..1.3xy(x²y-xy²+xy)-xy²(2x²-xy+2x)2.(x-1)(x²-4x+3)-x(x²-5x+2) 几道初一合并同类项的题.各位高手,帮帮忙吧!-0.8a²b-6ab-1.2a²b+5ab+a²b2/3a²-1/2ab+3/4a²+ab-b²6x²y+2xy-3x²y²-7x-5yx-4y²x²-6x²y4x²y-8xy²+7-4x²y+12xy²-43xm+3 X²+xy²-x²-y²-3xy+2x+2y-1分解因式 (-3x²)·(1/3xy²)= (-3x²)·(1/3xy²) (-3x²y)(1/3xy²)答案? 1 3x²+4xy-y²=2 4xy+1-4x²-y²= (5x²y-2xy²-3xy)-(2xy+5x²y-2xy²),x=-1/5,y=-1/3 分解因式x²+14x+49 (m+n)²-6(m+n)+9 -x²-4y²+4xy -2xy-x²-y² 3ax²(a+b)²-12(a+b)+36 (x+y)²-4(x+y-1) 1-m²-n²+2mn要过程 是作业 急啊! ①.8a²b²c²÷12a²bc ②.5mn(a-b)/-15m³(b-a) ③..6-2x / 9+x²-6x ④.7a²(a+b-c) / 28ab(c-a-b)⑤..3x²-3xy / x²-2xy+y² ⑥ 4b²-a² / 4b²-4ab+a² ⑦..3x²-18x+27 / 2x²-1 1.(8xy-x²+y²)-(x²-y²+8xy)2.(2x²-1/2+3x)-4(x-x²+1/2)3.3x²-[7x-(4x-3)-2x²] 因式分解:x²-xy-12y² (-½x²y)^3*(-3xy²)²(-1/2x²y)³×(-3xy²)² -12xy×3x²-x²y×(-3xy) 有关因式分解的题!2、6x²-7xy+2y²; x²+144y²-25xy; 6x²-13x+6; 2x²-56x²-7xy+2y²; x²+144y²-25xy; 6x²-13x+6; 2x²-5x+3; 2x²+7x+3 -x²-x-56 12x²-11那-x²-x+56