x<5
Step-by-step explanation:
divide 40 by 8
Since 3 roots are rational but one of the four is irrational. Then, there must be a conjugate pair for that which we can do by reversing the sign between the rational and the non-rational part.
Hence, Another root of the polynomial function f(x) will be ofcourse the conjugate pair of 3 + β11 i.e. 3 - β11 (Ans)