If 3 is a zero of the polynomial x^+2x-a then find
the value of a
Answers
Answered by
1
Answer:
thanks for free points....
Answered by
1
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
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