How many terms are there in (x^2+2x-1)?
Answer and explanation
Correct answer: 3
In \(x^2+2x-1\), the terms separated by plus or minus signs are \(x^2\), \(2x\), and \(-1\). Therefore, the expression has 3 terms. \(x^2\) and \(2x\) cannot be treated as one term because they are separated by a plus sign. Exam tip: Count a negative constant as a separate term as well.
Frequently asked questions
What is the correct answer to this question?
3
Why is this the correct answer?
In \(x^2+2x-1\), the terms separated by plus or minus signs are \(x^2\), \(2x\), and \(-1\). Therefore, the expression has 3 terms. \(x^2\) and \(2x\) cannot be treated as one term because they are separated by a plus sign. Exam tip: Count a negative constant as a separate term as well.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Algebraic expressions.
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