Question

find the cubic polynomial whose zeroes are 1/2, 1 and -2 Please be fast!!!​

Answer 1

Step-by-step explanation:

1/2 + 1 - 2 = -b/a , -b/a = -1/2 , b/a = 1/2

1/2 - 2 - 1 = c/a , c/a = -5/2

-1 = d/a , d/a = -1

b : c : d = 1 : -5 : -2

then , a = 2

Cubic polynomial -->

2x³ + x² - 5x - 2 = 0