Question

verify whether - 1 and 2 are the zeros of
Polynomial (x+1)(x-2)​

Answer 1

Answer:

-1 and 2 are zeroes of polynomial

Step-by-step explanation:

(x+1)(x-2) = x^2-2x+x-2

= x^2-x-2

f (x)= -1 ,

(-1)^2-(-1)-2 = 1+1-2 = 0

f (x)= 2 ,

(2)^2- (2)-2

4-4 = 0