Question

of 9is a zero of polynomial x^2+ax-7. then find the value of a​

Answer 1

Answer:

a= -8

Step-by-step explanation:

F(x)= x^2+ ax- 7

Since 9 is a zero,

F(9)= (9)^2+ a(9)- 7= 0

F(9)= 81+ 9a- 7= 0

9a= -72

a= -8

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Answer 2

Answer:

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