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Which of the following expressions is a polynomial in one variable \(x\) of degree 4?
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Answer and explanation
Correct answer: \(7x^4-3x^2+x-9\)
In a polynomial, every exponent of \(x\) must be a non-negative integer. In option B, the greatest exponent is 4, so its degree is 4. A, C and D contain negative or fractional exponents. Exam tip: check exponents first.
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What is the correct answer to this question?
\(7x^4-3x^2+x-9\)
Why is this the correct answer?
In a polynomial, every exponent of \(x\) must be a non-negative integer. In option B, the greatest exponent is 4, so its degree is 4. A, C and D contain negative or fractional exponents. Exam tip: check exponents first.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Polynomials in one variable.
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