Question

If 3 is a zero of the polynomial x^+2x-a then find
the value of a
​

Answer 1

Answer:

thanks for free points....

Answer 2

Answer:

15

Step-by-step explanation:

let x²+2x-a=0

3 is a zero of this equation so

x²+2x-a=0

(3)²+2(3)-a=0

9+6-a=0

-a=-15

so, a=15