Question

a quadric polynomial whose zero are -4 and -5 is ​

Answer 1

Answer :

x² - 9x + 20

Solution :

Given,

Zeroes of polynomial = -4, -5

p(x) = x² + (α + β)x + αβ

p(x) = x² + (-4 - 5)x + (-4)(-5)

p(x) = x² - 9x + 20