若|4x+1|+(y-1/2)²=0 xy,各等于多少
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/08 07:56:34
若|4x+1|+(y-1/2)²=0 xy,各等于多少
若|4x+1|+(y-1/2)²=0 xy,各等于多少
若|4x+1|+(y-1/2)²=0 xy,各等于多少
|4x+1|+(y-1/2)²=0
4x+1=0 y-1/2=0
x=-1/4 y=1/2
4x+1=0
y-1/2=0
∴x=-1/4
y=1/2
若|4x+1|+(y-1/2)²=0 ,则:4x+1=0,y-1/2=0; x=-1/4,y=1/2.
x=-1/4 y=1/2
不知道
计算x²-x/x²×x/1-x和x²-4y²/x²+2xy+y²÷x+2y/x²+xy
1·已知a+b+c=0且a²+b²+c²=1,求ab+bc+ac的值.2·已知x,y满足等式x²+y²-4x+y+17/4=0,求(x+y)²的值.3·已知x+y=5,x²+y²=13,求代数式x²y+2x²y²+xy²的值.4·若a²+b²+
(x²-y)²-(2y-2)²^4表示4次方9x^4-36y²(a²-2b)²-(1-2b)²
在线求助完全平方公式因式分解(1)-a²-1+2a(2)2x²y-x²-xy²(3)4x²-20x+25(4)(x²+1)²-4x²(5)(2x-y)²-2(2x-y)+1(6)(x+y)²-2(x²-y²)+(x-y)²
因式分解 (x²+y²-1)²-4x²y²
1、x²+4y²+_______=(x-2y)²
几道数学的约分题.(1)约分.2X²-2/X²-2X+1 3A²-12A+12/4-A² 2 若X²+Y²-2X-6Y+10=0 求分式 2XY-Y²-X²/Y²-X²
1.(8xy-x²+y²)-(x²-y²+8xy)2.(2x²-1/2+3x)-4(x-x²+1/2)3.3x²-[7x-(4x-3)-2x²]
这些完全平方公式等于多少?1.(x+y+z)²-(x-y-z)² 2.a²(a-b)²-b²(a+b)² 3.(x+y)²-16(x-y)² 4.16-(2a+3b)² 5.(a²+4)²-16a² 6.x²-xy+1/4y²
1、计算2006²-2005²+2004²-2003²+2002²-.+2²-1²2、求证:无论x,y取何值,4x²-12x+9y²+30y+35
(x+y)²-4(x+y-1)(x²+y²)²-4x²y²(x²+2x)²+2(x²+2x)+1a²-b²-2a+19-6a-6b+a²+2ab+b²
1 3x²+4xy-y²=2 4xy+1-4x²-y²=
①.X²-2X+1/X²-1 ÷ X²-X/X+1②.a-1/a²-4a+4 ÷ a²-1/a²-4③.x³-x²/x²-x ÷ x²-2x/x-1④.(x-y)²/x+y ÷ 1/y+x X 1/x-y帮下忙嘛 咯
1.(b²+2a²)(2a²-b²) 2.(4x²-4y²)(x²+y²) 3.—(x-1)(x+1)-3(x+2)(x-2) 4.(5y²+4x²)[4y²+(2x-y)(-2x-y)]
分解因式:2x²-8xy+5y²6x²-9x-4242x²-85xy+42y²3x²-5xy-y²(2x-y+3)(2x-y+1)-15(x+y)²+4(x+y)(3x-y)+4(3x-y)²完全按照原题打的
帮我做几道因式分解题目(一题10分,共6题)1.y(y+1)(x²+1)+x(2y²+2y+1)2.6x²-5xy-6y²-2xz-23yz-20z²3.2x²-7xy+6y²+2x-y-124.(x²)²-x²y²+(4y²)²5.(x²)²
例如:a²+b²-c²-4d²-2ab+4cd x²+2xy+y²-2x-2y+1=0
若x²+y²-x+y-k=0表示圆,半径为?也就是1/2√D²+E²-4F~