Free Printable Неравенства 9 клас

1.

Решетш неравенството

(х-5).(х-8) $>0$

a)

безброй много

решения

b)

$х\epsilon\left(-\infty„5\right)\cup\left(8,\ \infty\right)$

c)

$х\epsilon\left(5,8\right)$

d)

няма решение

2.

$\left(2х+10\right).\left(3х-18\right).\left(4х+40\right)\le0$

a)

няма решения

b)

$х\epsilon\lfloor-\infty,,5\rfloor$

c)

$х\epsilon\left(-\infty,,-10\rfloor\cup\lfloor-5,,5\rfloor\right)$

d)

$х\epsilon\lceil-10,,-5\rceil$

3.

Решете неравенството

(х-7).(х-14).(х-34) $\ge0$

a)

$\left(х\epsilon\lceil7„\ 14\rceil\cup\lceil34„+\infty\right)$

b)

няма решение

c)

хе (7,,14)

х е (34„ 35)

d)

х $=6$

4.

$\left(х^2-4\right)\left(х+3\right)\left(х-4\right)\left(х+5\right)\left(х-6\right)\le0$

a)

$х\epsilon\lceil-5,,-3\rfloor\cup\lfloor-2,,2\rfloor\cup\lfloor4,,6\rfloor$

b)

х $\epsilon\left(-5,,-3\right)$

c)

х $\epsilon\left(-2,,2\right)$

d)

х $\epsilon\left(2,,4\right)$

5.

$\left(3х+21\right)\left(\frac{1}{2}-х\right)\left(\frac{5}{8}+х\right)<0$

a)

няма решение

b)

$х\epsilon\left(-\infty,,-7\right)\cup\left(-0,625,,-0,5\right)$

c)

х $\epsilon\left(7,,0,625\right)$

d)

$х\epsilon\left(7,,0,5\right)$

6.

$\left(х^2-81\right)\left(х^2-144\right)<0$

a)

хе 12 и -12

b)

х е 9 и-9

c)

$х\epsilon\left(-12,,-9\right)\cup\left(9,,12\right)$

d)

нчма решение

7.

$\left(х-10\right)\left(х-12\right)\left(х-14\right)>0$

a)

$х\epsilon\left(10,,12\right)\cup\left(14,,+\infty\right)$

b)

няма решение

c)

$х05,66$

d)

$х\epsilon\left(10,,14\right)$

8.

Определете

графиката на функцията

как е разположена за

неравенството

$-5х^2-4х-6<0$

a)

неопределена

b)

С върха на долу

c)

С върха на горе

d)

няма решение

9.

$\left(х^2-49\right)\left(х^{ }+50\right)\ge0$

a)

х $\epsilon\left(-\infty,+\infty\right)$

b)

$х\epsilon\lceil-50,,-7\rceil\cup\lfloor7,,+\infty$

c)

х $\epsilon\left(-7,,50\right)$

d)

$х\epsilon\left(-7,,57\right)$

10.

$\left(х^2-25\right)\left(х^2-36\right)\le0$

a)

$х\epsilon\left(-6,,6\right)$

b)

х $\epsilon\left(5,,6\right)$

c)

х $\epsilon\left(6,,5\right)$

d)

$х\epsilon\lceil-6,,-5\rceil\cup\lfloor5,,6\rfloor$

11.

(х-6). $\left(х+6\right)\left(х^2-36\right)\ge0$

a)

$х\left(-\infty,,-6\rfloor\cup\lfloor6,,+\infty\right)$

b)

(-6,,6)

c)

$х\epsilon\left(+\infty,,6\right)$

d)

$х$

12.

$\left(х+\frac{1}{2}\right)\left(х-\frac{1}{3}\right)\left(х+\frac{1}{4}\right)\left(х-\frac{1}{5}\right)\left(х+\frac{1}{6}\right)>0$

a)

$х\epsilon\left(-0,5,,-0,3\right)\cup$ $\left(-0,17,,0,2\right)\cup$

$\left(0.33,,+\infty\right)$

b)

няма решение

c)

х $\epsilon\left(5,,25\right)$

d)

х $\epsilon\left(0,5,,0,17\right)$

Неравенства 9 клас

Total questions: 12

Worksheet time: 6mins

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