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Повторение 8 класс алгебра

Authored by Ангелина Юрьевна

Mathematics

6th - 8th Grade

Used 257+ times

Повторение 8 класс алгебра
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13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Вычислите: 49×121\sqrt[]{49}\times\sqrt[]{121}

70

77

5929

49

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Реши уравнение: 5х=155\sqrt[]{х}=15

9

3

5

1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Внеси множитель под знак корня: 565\sqrt[]{6}

30\sqrt[]{30}

150\sqrt[]{150}

56\sqrt[]{56}

50\sqrt[]{50}

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Вынеси множитель из-под знака корня: 90\sqrt[]{90}

10310\sqrt[]{3}

45×245\times2

9109\sqrt[]{10}

3103\sqrt[]{10}

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Найди корни уравнения: х2−7х+12=0х^2-7х+12=0

х1=−3,  х2=4х_1=-3,\ \ х_2=4

х1=3,  х2=4х_1=3,\ \ х_2=4

х1=3,  х2=−4х_1=3,\ \ х_2=-4

х1=2,  х2=6х_1=2,\ \ х_2=6

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Вычисли дискриминант: 5х2+9х+4=05х^2+9х+4=0

D=1

D=81

D=80

D=9

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Вычисли: 1015×1071021\frac{10^{15}\times10^7}{10^{21}}

1

100

10

22

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