Free Printable 2次不等式(3)

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2次不等式(3)

Total questions: 3

Worksheet time: 2mins

Name

Class

Date

1.

$x^2+4x+6\ge0$ を解け。

a)

なし

b)

$x\le-2-\sqrt{2},\ -2+\sqrt{2}\le x$

c)

すべての実数

d)

$2\le x\le3$

2.

$x^2-2x+5<0$ を解け。

a)

なし

b)

すべての実数

c)

$x=1$

d)

1 以外のすべての実数

3.

$-x^2+x-2<0$ を解け。

a)

$-2<x<1$

b)

$x<-1,\ \ 2<x$

c)

すべての実数

d)

なし

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