Posted by mema on Thursday, May 26, 2011 at 11:22pm.
how to do this: first, from the equation, we get b or the numerical coefficient of x.
from the given, b = 2.
then divide this by 2:
2/2 = 1
and square it:
1^2 = 1
thus, the number that we're looking for is 1:
x^2 + 2x + 1 =(x + 1)^2
hope this helps~ :)
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