y=(n^2+n)x^2-(2n+1)x+1的因式分解
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y=(n^2+n)x^2-(2n+1)x+1的因式分解y=(n^2+n)x^2-(2n+1)x+1的因式分解y=(n^2+n)x^2-(2n+1)x+1的因式分解y=(n^2+n)x^2-(2n+1)
y=(n^2+n)x^2-(2n+1)x+1的因式分解
y=(n^2+n)x^2-(2n+1)x+1的因式分解
y=(n^2+n)x^2-(2n+1)x+1的因式分解
y=(n^2+n)x^2-(2n+1)x+1
=n(n+1)x^2-(2n+1)x+1
=[(n+1)x-1](nx-1)
=(nx+x-1)(nx-1)
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当n取何值时,y=(n²+2n)x ^n²+n-1x ^n²+n-1 ^后面的是幂数
y=(1-2X)^n的n阶导数,
x^(n)*x^(n+1)+x^(2n)*x
y=(n^2+n)x^2-(2n+1)x+1的因式分解
已知抛物线y=-1/2x^2-(n+1)x-2n (n