riverspurkey riverspurkey

21-04-2021
Mathematics

contestada

I don't understand this problem. I thought the answer was -9 but my teacher wouldn't accept it. please help.

If using the method of completing the square to solve the quadratic equation x² + 3x + 9 = 0, which number would have to be added to "complete the square"?

Respuesta :

yumahusky7 yumahusky7

21-04-2021

Answer:

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