Предмет: Математика, автор: mika0486

Помогите пожалуйста решить. Раскрыть скобки. (√x - 3√y)^2

Ответы

Автор ответа: artemiitarasev

(√x - 3√y)^2 =

( по формуле квадрата разности: $(a-b)^2 = a^2 - 2ab + b^2$ )

= $x - 6\sqrt{xy} + 9y$

artemiitarasev: не забудь отметить ответ как лучший

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