การบวก ลบ คูณ หาร พหุนาม ชุดที่ 1
Authored by SATCHA AOYCHAI
Mathematics
7th Grade
Used 500+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
ข้อใดต่อไปนี้ไม่ถูกต้อง
(11a2 - 14a - 6) + (9a2 + 12a + 10) = 20a2 - 2a + 4
(5a2 + 8a - 2) + (10a2 - 3a - 4) = 15a2 + 5a - 6
(3a2 - 10a - 7) + (6a2 - 4a - 6) = 9a2 - 6a + 13
(7a2 - 2a + 5) + (8a2 - 8a - 5) = 15a2 - 10a
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
ข้อใดผิด
(9a - 14b - 10c) - (5a - 8b + 3c) = 4a - 6b - 13c
(10a - 7b + 9c) - (-8a + 5b - 4c) = 18a - 12b + 13c
(16a - 10b + 9c) - (7b - 9c) = 16a - 17b + 18c
(3a + 7b - 5c) - (a - 3b + 4c) = 2a + 4b - c
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
ผลบวกของ (12a3 + 9b2 + 13c - 6) กับ (-10a3 - 8b2 - 5c + 9) ตรงกับข้อใด
2a3 + b2 + 8c + 3
2a2 + b2 - 8c - 3
2a3 - b2 - 8c + 3
2a3 + b2 - 8c + 3
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(13x2 - 10x + 8) - (11x2 - 9x - 7) ได้ผลลัพธ์ตรงกับข้อใด
2x2 - 19x + 1
2x2 - x + 15
2x2 + x + 1
2x2 - x - 15
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(16a - 10b + 9c) - (7b - 9c) ได้ผลลัพธ์ตรงกับข้อใด
16a + 3b + 18c
16a - 17b
16a - 17b + 18c
16a - 17b + c
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
ผลบวกของ 2x2 - 3x + 1 กับ 4x2 + 5 ตรงกับข้อใด
6x2 + 3x - 6
6x2 - 3x + 6
6x2 - 3x - 6
6x2 + 3x + 6
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
ผลบวกของ 5x2 + 2x + 7, 2x2 + 3 กับ -3x - 8 ตรงกับข้อใด
7x2 - x - 2
7x2 - x + 2
7x2 + x - 2
7x2 + x + 2
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