Question

verify that 3, - 1, - 1 / 3 are the zeros of the cubic polynomial P of X equal to 3 x cube minus 5 x square - 11 x minus 3​

Answer 1

Answer:

Step-by-step explanation:

Let f(x)=3x³-5x²-11x-3

x=3

f(3)=81-45-33-3

f(3)=0

x=-1

f(-1)=-3-5+11-3

f(-1)=0

x=-1/3

f(-1/3)=(-1/9)-(5/9)+11/3-3

f(-1/3)=(-6/9)+11/3-3

f(-1/3)=9/3-3

f(-1/3)=3-3=0