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OpenStudy (stevetron):
factor the expression. 4x^2-81y^2
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OpenStudy (haseeb96):
a^2 - b^2= (a-b)(a+b) 4x^2 -81y^2=(2x -9y)(2x +9y) is your answer
OpenStudy (stevetron):
oh OOOHHHHHHH, ok thank you so much!
OpenStudy (stevetron):
oh OOOHHHHHHH, ok thank you so much!
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