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Mathematics 13 Online
OpenStudy (anonymous):

multiply. (3xy-2b)(3xy-2b) Medal will be given.

OpenStudy (anonymous):

Use this simple formula: (a-b)^2 = a^2-2ab+b^2

OpenStudy (anonymous):

whats next?

OpenStudy (anonymous):

Let a= 3xy and b = 2b. If you tried, tha answer should be pretty straight forward. So I'll just give you the answer: 9x^2y^2-36xyb+4b^2

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