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What is the coefficient of (x^2) in (7x+4)?
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Answer and explanation
Correct answer: 0
The polynomial 7x+4 has an x-term and the constant term 4, but no x²-term. It can therefore be written as 0x²+7x+4, so the coefficient of x² is 0. Here, 7 is the coefficient of x, not of x². Exam tip: If a term of a given power is missing, its coefficient is 0.
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Why is this the correct answer?
The polynomial 7x+4 has an x-term and the constant term 4, but no x²-term. It can therefore be written as 0x²+7x+4, so the coefficient of x² is 0. Here, 7 is the coefficient of x, not of x². Exam tip: If a term of a given power is missing, its coefficient is 0.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Linear polynomials.
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