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OpenStudy (bananas1234):
What value should be added to the expression to create a perfect square? x2 – 10x. i got 5
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OpenStudy (bananas1234):
@JoannaBlackwelder
OpenStudy (anonymous):
close but no cigar
OpenStudy (joannablackwelder):
Hm, no, it is (b/2)^2
OpenStudy (joannablackwelder):
Any ideas how to use that formula?
OpenStudy (bananas1234):
x^2 - 10x + 25 then (x - 5)(x - 5), or (x - 5)^2
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OpenStudy (bananas1234):
right?
OpenStudy (joannablackwelder):
Yep, perfect! So, the added value is 25 :-)
OpenStudy (bananas1234):
:) thanks!
OpenStudy (joannablackwelder):
You're welcome!
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