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In (4x^5-7x^3+2), what are the coefficients of (x^4) and (x) respectively?

Answer and explanation

Correct answer: (0) and (0)

The coefficient of a term is the number multiplying the variable power. If a term is missing from a polynomial, its coefficient is understood to be zero. This convention allows us to compare all powers systematically, even when some terms are not written explicitly. It is different from confusing an exponent with a coefficient: 5 is an exponent in \\(x^5\\), not its coefficient.

The polynomial \\(4x^5-7x^3+2\\) contains no \\(x^4\\) term and no \\(x\\) term. We may write the missing parts as \\(0x^4\\) and \\(0x\\). Therefore the coefficients of \\(x^4\\) and x, respectively, are 0 and 0. Option B is correct; 4 and -7 are the coefficients of \\(x^5\\) and \\(x^3\\).

Related tags

PolynomialMissing TermsCoefficients

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