# Polynomial Functions

by josephcollins
Tags: functions, polynomial
 Emeritus Sci Advisor PF Gold P: 11,155 If you mean two identical roots, then ... write $$2x^3 - ax^2 - 12x - 7 = (x-b)^2(2x-c)$$ Expand the RHS and compare coefficients. You have 3 equations in 3 unknowns.