If the A.M of two numbers is 9 and G.M i...

If the A.M of two numbers is 9 and G.M is 4, then these numbers are roots of the equation:

A

`x^2-18x-16=0`

B

`x^2-18x+16=0`

C

`x^2-16x+18=0`

D

`x^2+16x-18=0`

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