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Factor: 4x^2+4xy−288y^2
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5 votes
Factor:
4x^2+4xy−288y^2

User Markom
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1 Answer

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4x^2+4xy-288y^2=\\ 4(x^2+xy-72y)=\\ 4(x^2+9xy-8xy-72y)=\\ 4(x(x+9y)-8y(x+9y))=\\ 4(x-8y)(x+9y)
User Simon Holroyd
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