If using the method of completing the square to solve the quadratic equation x 2 − 5 x − 19 = 0 x 2 −5x−19=0, which number would have to be added to "complete the square"?

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11-1 > 1-1+a

-12 > a

hello, there is a new name in town and that's the human spider!

answer: d.) the total number of protons and neutrons is 15

merry christmas!

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your friendly neighborhood human spider! .