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Mathematics 9 Online
OpenStudy (anonymous):

Can someone help for a medal?

OpenStudy (anonymous):

Find the product of (x + 7)^2

OpenStudy (callmekiki):

What are the options?

OpenStudy (anonymous):

A. x2 - 14x + 49 B. x2 + 14x + 49 C. x2 - 49 D. x2 + 49

OpenStudy (acxbox22):

hint: (a+b)^2= a^2+2ab+b^2

OpenStudy (callmekiki):

(x + 7)^2 = (7+x) (7+x)

OpenStudy (callmekiki):

(7+x) (7+x) = x^2 + 14x + 49

OpenStudy (callmekiki):

I think.

OpenStudy (acxbox22):

correct ;)

OpenStudy (anonymous):

Alright, thank you both of you.

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