Question

if 1 and -2 are two zeros of the polynomial x cube minus 4 x square - 7 x + 10 find its third zero​

Answer 1

Answer:

5

Step-by-step explanation:

W.K.T sum of theee zeroes of cubic polynomial is equal to -b/a

here,a=1 and b=-4

let another zero be is equal to P

1-2+P=4

-1+P=4

p=4+1

p=5

therefore another zero is 5