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Mathematics 9 Online
OpenStudy (anonymous):

(4x + 7)^2 Answer 16x^2 + 28x + 49 16x^2 + 49 16x^2 + 56x + 49 8x^2 + 14

OpenStudy (anonymous):

forget it

OpenStudy (anonymous):

its B

OpenStudy (anonymous):

your guess? rewrite as 2 binomials and multiply

OpenStudy (anonymous):

i think

OpenStudy (anonymous):

no - if that was a negative in the middle, that would be right - but this is not a perfect square. try again, use FOIL method to multiply

OpenStudy (anonymous):

|dw:1331416990029:dw|

OpenStudy (anonymous):

remember: (a+b)² = a² + 2ab + b²

OpenStudy (anonymous):

i got 16x^2 + 49

OpenStudy (anonymous):

is it C

OpenStudy (anonymous):

dees - that is not a negative . look at my draw box. PERFECT yes C

OpenStudy (anonymous):

ohhhhhh i see what i did i subtracted 28 by its self

OpenStudy (anonymous):

i was suppose to combine

OpenStudy (anonymous):

yes. earlier post gave you the correct shortcut - but I like to make sure people know FOil before showing shortcuts. Good studies....you are doing good

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