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3 years ago

12

If using the method of completing the square to solve the quadratic equation x^2+15x+21=0, which number would have to be added t

o "complete the square"?

2 answers:

Anit [1.1K]3 years ago

8 0

Step-by-step explanation:

the answer is in the above image

Anna35 [415]3 years ago

3 0

Answer:

my answer is 225/5 sorry comments for wrong

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2 years ago