求大神分解下因式1、ab(x²+1)+x(a²+b²) 2、x的四次方-10x²+9x²+y²-x²y²-4xy-1
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求大神分解下因式1、ab(x²+1)+x(a²+b²) 2、x的四次方-10x²+9x²+y²-x²y²-4xy-1
求大神分解下因式
1、ab(x²+1)+x(a²+b²) 2、x的四次方-10x²+9x²+y²-x²y²-4xy-1
求大神分解下因式1、ab(x²+1)+x(a²+b²) 2、x的四次方-10x²+9x²+y²-x²y²-4xy-1
1.(ax+b)(bx+a)