Question

if 3 is a zero of a polynomial x square +2x-a then find a​

Answer 1

Step-by-step explanation:

Given that:-

Given polynomial p(x)=x²+2x-a

we know that

If 3 is a zero then it satisfies the given polynomial

=>p(3)=0

=>(3)²+2(3)-a=0

=>9+6-a=0

=>15-a=0

=>a=15

The value of a is 15

Answer 2

Answer:

15 is the answer for your question