## College Algebra (6th Edition)

fill the blank with $a-bi$
See: Properties of Roots of Polynomial Equations (page 382) 1. If a polynomial equation.... 2. If $a+bi$ is a root of a polynomial equation with real coefficients $(b\neq 0)$, then the imaginary number $a-bi$ is also a root. Imaginary roots, if they exist, occur in conjugate pairs. --------------------- fill the blank with $a-bi$