Which option correctly gives the constant term of (2x^2+5x-1)?
Answer and explanation
Correct answer: -1
A constant term is a term that contains no variable. In \(2x^2+5x-1\), both \(2x^2\) and \(5x\) contain \(x\), whereas \(-1\) has no variable. Therefore, the constant term is \(-1\). The number \(5\) is the coefficient of \(5x\), not the constant term. Exam tip: identify the term with no letter or variable to find the constant term.
Frequently asked questions
What is the correct answer to this question?
-1
Why is this the correct answer?
A constant term is a term that contains no variable. In \(2x^2+5x-1\), both \(2x^2\) and \(5x\) contain \(x\), whereas \(-1\) has no variable. Therefore, the constant term is \(-1\). The number \(5\) is the coefficient of \(5x\), not the constant term. Exam tip: identify the term with no letter or variable to find the constant term.
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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