Question

if two zeroes of polynomial x³+3x²-5x-15 are √15 and -√15 at the find its third zeros​

Answer 1

Answer:

Step-by-step explanation:

the factors become x +√15 and x-√15 (α and β)

k( x²-(α+β)x +αβ)

x²- 15

divide the polynomial by x²- 15