Answer:18
Step-by-step explanation: pluging in -b/2a for first equation you get 3 plunging 3 in you get 6 solving for second equation you get -x^2+6x+3 pluging in -b/2a you get 3 then plugoing into equation you get 12 12-(-6)=18
They are 3 and 5.
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The answer is 0.662 if u divied