What is the degree of (x^9+3x^2-7x)?
Answer and explanation
Correct answer: 9
The degree of a polynomial is the greatest exponent of the variable in any of its terms. Here, the exponents of x are 9, 2, and 1, and the greatest is 9. Therefore, the correct answer is 9. The number 7 is neither an exponent of x nor relevant to the degree. Exam tip: While finding degree, look only at the highest power of the variable, not at the coefficients.
Frequently asked questions
What is the correct answer to this question?
9
Why is this the correct answer?
The degree of a polynomial is the greatest exponent of the variable in any of its terms. Here, the exponents of x are 9, 2, and 1, and the greatest is 9. Therefore, the correct answer is 9. The number 7 is neither an exponent of x nor relevant to the degree. Exam tip: While finding degree, look only at the highest power of the variable, not at the coefficients.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Degree of a Polynomial.
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