Mathematics
Senior High
想問一下這一題的第五個選項
後兩個括號要怎麼拆
12. 下列哪些不等式的解在數線上的長度為7?
2.3
45
x≤7
(4) log(x²+3x)≤1
→0<x≤2or-55x<-3
2
18-2
-5
(2)0.01≤ ≤105
(3)(x³ +5³) (x³-2³) ≤0
+
10*
(2+1)(3-9)(2-1)≤0.
Answers
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