How to write x2+y2+2x-12y-9 in standard form

Which of the following domains provide a real value periods

Last month, leonhard euler's watch kiosk at the mall had total sales of $9,489. merchandise totaling $225 was returned. the goods that were sold cost leonhard euler's $5,481. operating expenses for the moth were $992. what was the gross profit on sales?

How far does the wijw nj jh jevh dhhb vte hbhe gvbf5wf bjehn v