Ответ:
а) 2x^2+y^2+4xy-(2x^2+y^2-4xy)=2x^2+y^2+4xy-2x^2-y^2+4xy=8xy
б)36а^2+4b^2+24ab-24ab=36a^2+4b^2
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Ответ:
а) 2x^2+y^2+4xy-(2x^2+y^2-4xy)=2x^2+y^2+4xy-2x^2-y^2+4xy=8xy
б)36а^2+4b^2+24ab-24ab=36a^2+4b^2