姗豪填髯题 1.若Ix一21=2一、,则、的取值范围是 2.不等式2x一1宾8的正整数解是 3.小明要用三根木棒制作一个下角形,他已经选好了较短的两根木棒,长分别是20 cm和30 cm,那么第三根木棒的长所在范围是 4.己知y=2二一3,当一2成)3时,x的取值范围是_. 5.不等式一3恤+2)a+2的解集 姗 髯 髯 1 filling question 1. If Ix a 21 = 2 a, then, the value of the range is 2. Inequalities 2x - 1 Bin 8 positive integer solution is 3. Xiao Ming to use a wooden stick to make a lower corner, he The shorter two wooden sticks have been selected, and the lengths are 20 cm and 30 cm respectively. Then the length of the third stick is 4. If you know y=2 2 3, when 20%) 3, x The range of values ​​is _. 5. Inequality for a 3 shirt +2) solution set for a+2