
การแยกตัวประกอบของพหุนาม ม.2
Mathematics
8th Grade
20 Questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
1. ข้อใดต่อไปนี้ไม่ถูกต้อง
ก. x(x + 2) + 5(x + 2) = (x + 2)(x + 5)
ข. a(a – 3) – (a – 3) = a(a – 3)
ค. (y – 1)(y – 1 + 1) = (y – 1)y
ง. 3p(p + 4q) – q(p + 4q) = (3p – q)(p+ 4q)
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
2. การแยกตัวประกอบของ
2ac – 2bc + b – a คือข้อใด
ก. (a – b)(2c – 1)
ข. (a – b)(2c + 1)
ค. (a + b)(2c – 1)
ง. (a + b)(2c + 1)
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
3. ข้อใดเป็นการแยกตัวประกอบของ
15a2b3 + 18a4b – 12a3b2
ก. (–3a2b)( –5b2 – 6a2 + 4ab )
ข. (–3a2b)( 5b2 + 6a2 – 4ab)
ค. (3a2b)( –5b3 – 6a2b + 4ab )
ง. (3a2b)( 5b3 + 6a2b – 4ab )
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
4.การแยกตัวประกอบของ 10x2 – 25x คือข้อใด
ก. 10x(x – 15)
ข. 5x(2x – 5)
ค. x(10x + 25x)
ง. 5x(x – 5)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5. การแยกตัวประกอบของ 144x – 12x2 คือข้อใด
ก. 12x(12x – 1)
ข. –12x(x +12)
ค. 12x(x – 12x )
ง. –12x(x - 12)
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
6. ถ้า –64x2 – 40x = –8x(8x + b) แล้ว –2b
มีค่าเท่าไร
ก. –5
ข. 5
ค. –10
ง. 10
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
7. ข้อใดเป็นการแยกตัวประกอบของ
x2 – 25x + 24
ก. (x + 12)(x – 2 )
ข. (x + 4)(x – 6)
ค. (x – 1)(x – 24 )
ง. (x – 1)( 24 – x)
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