Question

if 3 is a zero of the polynomial X square + 2 x minus A then the value of a is​

Answer 1

Answer:

x²+2x-a

3²+2×3-a=0

9+6-a=0

15-a=0

-a=-15

a=15

Answer 2

Answer:

x^2+2x-a

as polynomial is 3

3^2+2(3)-a=0

9+6-a=0

15-a =0

15=a

Step-by-step explanation:

Therefore a=15.

hope it helps you friend