Question

求救:有道数学题不会啊,谁能给我解答下?

若集合M={x|(x+2)(x-1)<0,N={x|x+1<0},则M交N=______

Answer 1

M={-2<X<1}
N={X<-1}
M∪N={-2<x<-1}

Answer 2

{x|-2<x<-1}

Answer 3

(-2,-1)

Answer 4

M集合 -2＜x＜1
N x＜-1
M交N=-2＜x＜-1

Answer 5

(-2,-1)

Answer 6

(-2,-1)