In (9x^7-2x^5+4), what are the coefficients of (x^6), (x^4), and (x)?

Correct answer: \(0, 0, 0\)

The polynomial \(9x^7-2x^5+4\) contains only an \(x^7\) term, an \(x^5\) term, and the constant term \(4\). It has no \(x^6\), \(x^4\), or \(x\) term, so their coefficients are \(0, 0, 0\), respectively. The number \(-2\) is the coefficient of \(x^5\), not of \(x^4\). Exam tip: if a power of the variable is missing from a polynomial, its coefficient is \(0\).