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OpenStudy (anonymous):
Check if i got it right? Find the product of (3x + 7y)2. Answer 9x2 - 42xy + 49y2 9x2 + 42xy + 49y2 this is my answer 9x2 + 49y2 9x2 - 49y2
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OpenStudy (anonymous):
9x^2 + 42xy + 49y^2 is correct.
OpenStudy (anonymous):
Yup, you did. (3x + 7y)^2 = (3x)^2 + 2(3x)(7y) + (7y)^2 = 9x^2 + 42xy + 49y^2
OpenStudy (anonymous):
Thanks guys/ and girls.
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