x²-1(xy)²-13x²+6xy+3y²(x-y)²+4xy(a+b)²+2(a+b)+1x³-25x
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计算x²-x/x²×x/1-x和x²-4y²/x²+2xy+y²÷x+2y/x²+xy
x²y²-x²y-xy²+x+y-1因式分解
x⁴-a²x²-b²x²+a²b²x²(x+1)-y(xy+x)
x³y³-x²y²-xy+1
x²-9x²y²+6xy-1a²b²+16ab+60
X²+xy²-x²-y²-3xy+2x+2y-1分解因式
x²-xy+1/4y² 分解因式
1-x²+4xy-4y² 因式分解
(-3x²)·(1/3xy²)=
1-x²-9y²+6xy因式分解
(-3x²)·(1/3xy²)
(-3x²y)(1/3xy²)答案?
1 3x²+4xy-y²=2 4xy+1-4x²-y²=
76三1 合并多式项:5 ² x²y-5xy²- xy - -------- +x²y2 2
-12x²y+15xy² ,9a²-4b² ,1/4a²-x²y² ,
(-½x²y)^3*(-3xy²)²(-1/2x²y)³×(-3xy²)²
1.(8xy-x²+y²)-(x²-y²+8xy)2.(2x²-1/2+3x)-4(x-x²+1/2)3.3x²-[7x-(4x-3)-2x²]
整式乘法..1.3xy(x²y-xy²+xy)-xy²(2x²-xy+2x)2.(x-1)(x²-4x+3)-x(x²-5x+2)