Автор - danildsdffds

(3x-5y)(3x-5y)-3x(3x-10y)

Ответ

Автор - olgaотличница
(3x-5y)^2-9x^2+30xy= 9x^2-30xy+25y^2-9x^2+30xy=18x^2+25y^2

Ответы и объяснения

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