Which polynomial has four terms and degree (5)?

Correct answer: \(x^5+x^3-x+2\)

\(x^5+x^3-x+2\) has four terms: \(x^5\), \(x^3\), \(-x\), and \(2\). The highest power of \(x\) is \(5\), so the degree of this polynomial is \(5\). Option B has four terms but degree \(4\). Option C has degree \(5\), but it contains only two terms. Option D is not a polynomial because \(\frac{1}{x}=x^{-1}\) has a negative exponent. Exam tip: First count the terms, then identify the greatest non-negative integer exponent of the variable.