Question

if 3 is the polynomial x^2+2x-a, then find a? Explain? ​

Answer 1

Answer:

x2+2x-a

2x3-a

2(27)-a

a=54

Answer 2

Answer:

a =-15

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Step-by-step explanation:

x^2+2x+a

(3)^2+2(3)+a

9+6+a

15+a

a=-15