Pls help I sad Without using a calculator, find all the roots of the equation below.
x^4 - 2x^3 + 6x^2 - 18x - 27 = 0
(Use a comma to separate answers as needed. Express complex numbers in terms of i)
The root(s) is(are)

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.