1.(x+y)²-10(x+y)+252.a²b²/4-ab+1
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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
(x+y)²-10(x+y)+25
1.(x+y)²-4xy=( )²2.x²-( )+25y²=( )²3.x²-8x²y²+16y四次方=( )²4.7.2²-2.8²= .
已知x²y²+x²+y²=10xy-16 求x,y
分解公因式 (x+y)²-2(x²-y²)+(x-y)²
(x+y)²-2(x²-y²)+(y-x)²
1.(x+y)²-10(x+y)+252.a²b²/4-ab+1
三道数学题(解出其中一道也行)1.已知x+y=5,x²+y²=13,求代数式x³y+2x²y²+xy³的值2.已知x²+2x+y²-6y+10=0,求x的y次方的值3.已知x(x-1)-(x²-y)+2=0,求代数式x²+y²
已知2x-y=10 【(x²+y²)-(x-y)²+2y(x-y)】÷4y 过程
2x-y=10 【(x²+y²)-(x-y)²+2y(x-y)】÷4y
(x+y+z)²-(x-y-z)²
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