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แบบทดสอบย่อย 2

Authored by 137 Damrongrit

Mathematics

8th Grade

Used 1+ times

แบบทดสอบย่อย 2
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

จงหาค่าของ x2 + 6x + 9 = 0

x = -3

x = 3

x = 1, 9

x = -3, 3

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

จงหาค่าของ 9x2 - 18x = 0

x = 0, 2

x = 0, -2

x = 2, 9

x = 3, 6

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

จงหาค่าของ 3x2 -2x = 8

x = 4, 2

x = 4, 8

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

x = 7 เป็นคำตอบของข้อใดข้อใด

x2 - 14x + 49 = 0

x2 + 18x + 87 = 0

x2 - x - 56 = 0

x2 - 14x + 49 = 0

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

x = 4,7 เป็นคำตอบของข้อใด

x2 - 6x - 7 = 0

x2 + 9x + 14 = 0

x2 - 3x - 28 = 0

x2 - 11x + 28 = 0

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

จงหาค่าของ y2 + 3y - 18 =0

y = -6, 3

y = 2, -9

y = -8, 4

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

จงหาคำตอบของ 3a2 + 12a + 9 = 0

a = -3, -3

a = -3, -1

a = 3, 1

a = 3, 3

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