xy^2-4x^2-1/16y^43a(x^2+4)^2-48ax^2(x-2y)^2+10(2y-x)+252(a^2+b^2)(a+b)^2-(a^2-b^2)试证明:不论a、b取何值.袋鼠式a^2+b^2-2a-4b+8的值总是正数.若a^2+b^2-a-4b+17/4=0 求a^b-ab的值.今天下午要用~第四个错了2(a^2+b^2)(a+b)^2-(
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/30 14:53:09
xWN@~l7sP{q.Cʡ(J+ڔQp8Bgw8$qw7?NekS~LÜרekCT
kŤ[d5RǮl 59\q˾t]k8^z~)~C'18.v}V7OR%c7(+5`ۑGJŋçnWWQ}t+[qt<VB&DCȧi0_\^<7V;'AǓNR`AZ@'.#˨:ĖP 4h]^̲3̜J!rӹ@sV,1b9 \zpL%Î܈L,GJR*IJlF k>hpYUfU%
y,p@~49$]OL"a`[-lk%*e,#1_KDD/l'`8tG #C;T.cT\Rp:C1L/%(詄,r^p-irCje0XaYF@y 7%29`?~nSH{?`ESoyP^
下列因式分解中,正确的是:.A.-2x^3-3xy^3+xy=-xy(2x^2-2y^2+1).B.-x^2-y^2=-(x+y)(x-y)C.16x^2+4y^2-16xy=4(2x-y)D.x^2)y+2xy+4y=y(x+2)^2
(x+y)(x+y+2xy)+(xy+1)(xy-1)(x+y)(x-y)+4(y-1)
因式分解30题(要过程)am+an+bm+bn x^2+5y-xy-5x x2+xy+2xz+x (a+b)x-(b+a)y -12x(x-y)-(y-x)x^2 2x^2+4x+2 x(x+z)-y(y+z) 2(x^2-3ab)+x(4a-3b) 4x^2+12xy+9y^2-25 x^4-16 16x^4-1 x^2+9x+8 x^2-10xy+24y^2 2x^2+15xy-8y^2 3x^2-6xy+3y^2 24x^2+22x-21 -x^2+4xy-
【分解因式】 x²-xy+4分之1y² x²y-2xy²+y³ a(x-y)-b(y-x)+c(x-y)【分解因式】x²-xy+4分之1y²x²y-2xy²+y³a(x-y)-b(y-x)+c(x-y)(x+y)²-16(x-y)²
因式分解(x+y-2xy)(x+y-2)+(xy-1)^2设x+y=a,xy=b,
1、 (2a-3b)^3 2、 (2x+y-3^2) 3、 (2x+y)(4x^2-2xy+y^2) 4、 (a+2)(a-2)(a^4+4a^2+16)5、 (x+y)(x-y)(x^2-xy+y^2)(-x^2-xy-y^2) 6、 (x^2+2xy+y^2)(x^2-xy+y^2)^2 共6题,
因式分解xy(xy+2)+6(xy+8)-4(x+y-2)^2-16(x+y+1)谢谢
已知A=5x²y-3xy²+4xy;B=7xy²-2xy+x²y,且x+y=2,x-y=0,化简求-1/2(A+B)-A.
XY(XY+3)+(XY+4)+4(X+Y+1)-(X+Y+2)
1-2/x+y=xy,4y+6x=xy.求xy的解?
xy>0,x不等于y,比较loga(3x^2+4xy+y^2)与loga(2x^2+6xy)大小.(a不等于1,a>0)
因式分解 1)1-8xy^2+16x^2y^4 2)0.01x^2-0.2xy+y^2 3)9a^4+6a^2+1
已知A=5x^+2xy-4y^,B=-x^-4xy+y^,C=x^-xy+3y^其中xy满足|2x+1|+(y-4)^=0,就A-2B+C已知A=5x^+2xy-4y^,B=-x^-4xy+y^,C=x^-xy+3y^其中xy满足|2x+1|+(y-4)^=0,求A-2B+C-2B+C的值
(x+y)a平方-(x+y)因式分解,(1) (x+y)a平方-(x+y)(2) 4y平方-4xy+x平方(3) (x-y)平方-8(x-y)+16
分解公因式 -a^4+16-x^2+4xy-4y^2ax^2+2a^2x+a^3-3x^2+6xy-3y^24xy^2-4x^2y-y^3(p-4)(p+1)+3px^2+7x-18(a-b)(x-y)-(b-a)(x+y)6xy^2-9x^2y-y^33x^2+27x-54
解下(a+2)(a-2)(a^4+4a^2+16) (x^2+2xy+y^2)(x^2-xy+y^2)^22 (x+y+z)(-x+y+z)(x-y+z)(x+y-z)
因式分解.1.4a^(n-1)*b^2-16a^(n+1) 2.x^2*y^2-y^4-12xy^2+36y^2 3.x^2-6xy+9y^2-3x+9y+2
.(x+y-2)(x+y-2xy)+(xy-1)^2