Question

A quadratic polynomial whose sum and product of zeroes are -9 and 20

Answer 1

Answer:

if a and b are zeros of a polynomial, then we can form a polynomial as

x² - x(a + b) + ab

given a + b = -9 and ab = 20

p(x) = x² - x (-9) + 20

=> p(x) = x² + 9x + 20