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in the quadratic formula equation , what is the value, a, in order to form a perfect square

in the quadratic formula equation what is the value a in order to form a perfect square class=

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prestonshelton
Hello!

You can put the answer choices in for a and see if you get a perfect square

When you do this you get the answer of 16

Hope this helps!
MrGumby
The easiest way to find the a to complete a perfect square is by taking half of the middle number and squaring it. That will always result in a perfect square. 

Half of -8 is -4. When you square -4 you get 16. 

The answer is therefore the answer is 16 

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