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"?

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Step-by-step explanation:

center= (-2,0)

radius= sqrt2/2

step-by-step explanation:

1/3

step-by-step explanation:

to find this, you can divide 12 by 4 which is 3 or you can multiply 4 until you reach 12 (4x3=12). both should give you 3, meaning theres three times less bananas than there are oranges.