## College Algebra (10th Edition)

Having $2+i$ as a zero means that its conjugate $2-i$ must also be a zero of the function.
RECALL: The Conjugate Pairs Theorem states that if $a+bi$ is a zero of a polynomial function with real coefficients, then $a-bi$ is also a zero of the function. The given statement is false since having $2+i$ as a zero of a polynomial function with real coefficients means that $2-i$ is also a zero of the function.