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OpenStudy (anonymous):
Is the following problem simplified correctly? (4x+y)2=16x2+y2
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OpenStudy (anonymous):
no
OpenStudy (anonymous):
is it ^2
OpenStudy (anonymous):
no you miss the mixed term +8xy
OpenStudy (anonymous):
16 x^2+8 x y+y^2
OpenStudy (anonymous):
should be an 8xy is the middle
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