Mathematics
Senior High

数学Iです

x2ー5x+4<=0
x2乗ー2x-3>0

この連立不等式の解き方を教えてください

Answers

上の式=(x-1)(x-4)<=0 よって1<=x<=4
下の式=(x-3)(x+1)>0 よってx<-1,3<x
よって3<x<=4

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