Question

Obtain all the zeros of the polynomial x +4x -2x -20x-15, if two of its zeroes are √5 and
-root5

Answer 1

Answer:

Step-by-step explanation:

α = √5, β = -√5

x2 -(α + β) + αβ

x2 - (√5 - √5) + (√5)(-√5)

x2 - 0x - 5                    q(x)

p(x) = x4 + 4x3 + 4x2 - 2x - 20x - 15

                    x2 - 0x - 5