Quadratic Square: proper way to write it?

Please help...what is the proper way to write a quadratic square. The problem I am working on is - x²-6x=0

I'm sorry, but I do not understand your question. What do you mean by "a quadratic square"? What are you trying to "write"?

Please reply with clarification. Including the exact text of the exercise, along with the complete instructions, might be helpful.

Thank you.

Eliz.