Question

If a, b, c are zeroes of x3 - 4x + 1. then a3 + b3 + c3 is?

Answer 1

Answer:

-1

Step-by-step explanation:

x3-4x+1=0

x3-4x=-1

taking x as common from LHS

x(X2-4)=-1

x=-1 or x2-4=-1

x2=3

x=3^1/2 or x=-3^1/2

therefore

a=-1, b=3^1/2, c=-3^1/2

a3+b3+c3=(-1)^3+(3)^3/2-(3)^3/2

(-1)^3

-1