Question

find the zeroes of the polynomial t²-15 and verify the relationship between the zeroes and the coeffients

Answer 1

Here is tge answere to   your  question.  

Answer 2

t^2-15=0
t^2=15
t=root15,-root15
Alpha=root15
Beta= - root15
a+b= - B/A
root15+(-root15) =0/1
0=0
ab=C/A
root15×-root15= - 15/1
-15= - 15