2.2 一元不等式

2.2 一元不等式

9th Grade

15 Qs

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2.2 一元不等式

2.2 一元不等式

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Medium

Created by

HOI WONG

Used 10+ times

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 Q1 (x1)(2x1)>0Q1\ 解(x-1)(2x-1)>0。  

 x>1 x<12x>1\ 或x<\frac{1}{2}  

 x>1 x<12x>-1\ 或x<\frac{1}{2}  

 x>1 x<12x>1\ 或x<\frac{-1}{2}  

 x>1 x<2x>1\ 或x<2  

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 Q2 (x+2)(x3)6Q2\ 解(x+2)(x-3)\le6。  

 3x4-3\le x\le4  

 3x43\le x\le4  

 3x4-3\le x\le-4  

 3x<43\le x<4  

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 Q3 3x27x+20Q3\ 解3x^2-7x+2\le0。  

 13x2\frac{-1}{3}\le x\le2  

 13x2\frac{-1}{3}\le x\le-2  

 1x21\le x\le2  

 13x2\frac{1}{3}\le x\le2  

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 Q4 x26x+70()Q4\ 解x^2-6x+7\ge0。(答案以根號「\sqrt{ }」表示。)  

 無解  

  x32\ x\le3-\sqrt{2}  

 x3+2  x32x\ge3+\sqrt{2}\ 或\ x\le3-\sqrt{2}  

 x3+2 x\ge3+\sqrt{2}\   

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 Q5  x2+10x+18<0()Q5\ \ 解x^2+10x+18<0。(答案以根號「\sqrt{ }」表示。)  

 無解  

 x>57x>-5-\sqrt{7}  

 x<5+7x<-5+\sqrt{7}  

 57<x<5+7-5-\sqrt{7}<x<-5+\sqrt{7}  

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 Q6  4xx2<5Q6\ \ 解4x-x^2<-5  

 x<1x<-1  

 x>5x>5  

 x<1 x>5x<-1或\ x>-5  

 x<1 x>5x<-1或\ x>5  

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 Q7   x240Q7\ \ 解\ x^2-4\ge0  

 x2x\le-2  

 x2x\ge2  

 x2  x2x\le-2\ 或\ x\ge2  

 2x2-2\le x\le2  

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