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OpenStudy (anonymous):
Factor the following polynomials completely: 4x^2-81y^2 and 4a^2b^2x^2-25c^2x^2
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OpenStudy (campbell_st):
1st is (2x-9y)(2x+9y) 2nd (2abx - 5cx)(2abx + 5cx)
OpenStudy (anonymous):
Thank you!
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