2次不等式を極める③

2次不等式を極める③

10th - 12th Grade

8 Qs

quiz-placeholder

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2次不等式を極める③

2次不等式を極める③

Assessment

Quiz

Mathematics

10th - 12th Grade

Practice Problem

Hard

Created by

Kenji Takei

Used 12+ times

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

次の2次不等式を解け.

 x25x+20x^2-5x+2\le0  

 5172x5+172\frac{5-\sqrt{17}}{2}\le x\le\frac{5+\sqrt{17}}{2}  

なし

 x5172x\le\frac{5-\sqrt{17}}{2}  , 5+172x\frac{5+\sqrt{17}}{2}\le x  

すべての実数

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

次の2次不等式を解け.

 3x2+8x+1<0-3x^2+8x+1<0  

 4193<x<4+193\frac{4-\sqrt{19}}{3}<x<\frac{4+\sqrt{19}}{3}  

なし

 x<4193x<\frac{4-\sqrt{19}}{3}  , 4+193<x\frac{4+\sqrt{19}}{3}<x  

全ての実数

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

次の2次不等式を解け.

 x2+4x+40x^2+4x+4\le0  

 x2x\ne-2  

 x=2x=-2  

すべての実数

なし

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

次の2次不等式を解け.

 x2+8x+17>0x^2+8x+17>0  

 x4x\ne4  

 x=4x=4  

すべての実数

なし

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

次の2次不等式を解け.

 x2+3x2>0x^2+3x-2>0  

 3172<x<3+172\frac{-3-\sqrt{17}}{2}<x<\frac{-3+\sqrt{17}}{2}  

なし

 x<3172x<\frac{-3-\sqrt{17}}{2}  , 3+172<x\frac{-3+\sqrt{17}}{2}<x  

すべての実数

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

次の2次不等式を解け.

 2x24x302x^2-4x-3\ge0  

 2102x2+102\frac{-2-\sqrt{10}}{2}\le x\le\frac{-2+\sqrt{10}}{2}  

なし

 x2102x\le\frac{-2-\sqrt{10}}{2}  , 2+102x\frac{-2+\sqrt{10}}{2}\le x  

すべての実数

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

次の2次不等式を解け.

 x2+6x+9>0x^2+6x+9>0  

 x3x\ne-3  

 x=3x=-3  

すべての実数

なし

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