Class 9 Mathematics · Chapter 4 · Test 1
Common Factor and Trinomial
40 MCQs
40 questions · 40 min · 40 marks
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Sample questions
The first 5 of 40. Try each one, then tap to see the answer.
Question 1
The greatest common factor of the terms 2x and 6 is:
- A6
- Bx
- C2
- D3
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Answer: C
2 divides both 2x and 6 exactly and is the greatest such factor.
Question 2
A common factor of two or more expressions is an expression that:
- Aadds to each of them
- Bdivides each of them exactly
- Cis always equal to 1
- Dis larger than each of them
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Answer: B
A common factor divides all the given expressions exactly without a remainder.
Question 3
Factorize 6x + 12:
- A6(x + 1)
- B6(x + 12)
- C12(x + 6)
- D6(x + 2)
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Answer: D
6 is common in both terms so 6x + 12 = 6(x + 2).
Question 4
Factorize 15y² + 20y:
- A5y(3y + 4)
- B5y(3y + 20)
- C15y(y + 20)
- D5(3y + 4)
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Answer: A
The common factor of 15y² and 20y is 5y so the result is 5y(3y + 4).
Question 5
Factorize 4a²b + 8ab²:
- A4ab(a + b)
- B8ab(a + b)
- C4ab(a + 4b)
- D4ab(a + 2b)
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Answer: D
The common factor is 4ab so 4a²b + 8ab² = 4ab(a + 2b).
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