来自侯增选的问题
x(x-3)(2x+1)(x-1)(x三次方-1)≤0那个(x三次方-1)要怎么降次?越快越好,
x(x-3)(2x+1)(x-1)(x三次方-1)≤0
那个(x三次方-1)要怎么降次?
越快越好,
1回答
2020-04-17 00:45
x(x-3)(2x+1)(x-1)(x三次方-1)≤0那个(x三次方-1)要怎么降次?越快越好,
x(x-3)(2x+1)(x-1)(x三次方-1)≤0
那个(x三次方-1)要怎么降次?
越快越好,
X^3-1=(x-1)(x^2+x+1),