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Quiz
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Mathematics
•
8th Grade
•
Practice Problem
•
Hard
สิริพร ไพคำนาม
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(10a - 6b + 8c) + (-9a + 3b) + (7a + 5b - 2c) ได้ผลลัพธ์ตรงกับข้อใด
8a - 2b + 6c
18a + 2b + 6c
18a + 2b - 10c
8a + 2b + 6c
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(2xy + 5yz - 4x) + (2x - 4xy - 6yz) + (6yz + 4x - 4xy) ได้ผลลัพธ์ตรงกับข้อใด
-6xy + 5yz + 2x
-6xy - 5yz + 2x
-6xy + 17yz + 6x
-6xy + 11yz + 2x
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
x - (2x + 3 - x) ได้ผลลัพธ์ตรงกับข้อใด
4x - 3
3
-3
4x + 3
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
x2 - (2x + 1) ได้ผลลัพธ์ตรงกับข้อใด
x2 + 2x + 1
x2 + 2x - 1
x2 - 2x + 1
x2 - 2x - 1
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(2x2 + x - 2) - (x2 - 3x) ได้ผลลัพธ์ตรงกับข้อใด
x2 - 4x - 2
x2 + 4x + 2
x2 - 4x + 2
x2 + 4x - 2
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(x + 1) - (x2 - 3x + 1) ได้ผลลัพธ์ตรงกับข้อใด
x2 + 4x
-x2 - 4x
-x2 + 4x
x2 - 4x
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(2a - 3) - (a + b - 2c) ได้ผลลัพธ์ตรงกับข้อใด
a + b + 2c - 3
a - b - 2c - 3
a - b + 2c - 3
a - b + 2c + 3
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