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OpenStudy (anonymous):
What number should be added to the expression x^2 + 4x to change it into a perfect square trinomial?
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OpenStudy (anonymous):
answers a)2 b)4 c)8 d)1
OpenStudy (luigi0210):
divide b by 2, then square it
OpenStudy (anonymous):
there is no b
OpenStudy (luigi0210):
\[ax^2+bx+c\]
OpenStudy (primeralph):
|dw:1369886483346:dw|
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