1. How many terms are there in the expression 3x + 5?
- A1
- B2
- C3
- D4
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Answer: B) 2
Terms are parts separated by + or - signs. Here 3x and 5 are the two terms.
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2. Which term in 5x - 8y + 3xy is the constant term?
- A5x
- B-8y
- C3xy
- DThere is no constant term
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Answer: D) There is no constant term
Every term contains a variable, so the expression has no constant term.
3. In the term 1.5pq, what is the numerical coefficient?
- A1
- B5
- C1.5
- Dpq
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Answer: C) 1.5
The numerical factor multiplying pq is 1.5.
4. An expression has terms 7a, -7a, 2b and 5.
The two terms 7a and -7a are like terms.
When you add their coefficients (7 and -7), what number do you get?
The two terms 7a and -7a are like terms.
When you add their coefficients (7 and -7), what number do you get?
- A1
- B2
- C-1
- D0
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Answer: D) 0
Sum of the coefficients = 7 + (-7) = 0.
5. A puzzle expression is k x² + 5x - 3, and it is known that the coefficient of x² is twice the coefficient of x.
The coefficient of x is 5.
What is the value of k (the coefficient of x²)?
The coefficient of x is 5.
What is the value of k (the coefficient of x²)?
- A11
- B9
- C10
- D20
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Answer: C) 10
Coefficient of x is 5; coefficient of x² is twice that, so k = 2 x 5 = 10.
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