Предмет: Алгебра, автор: jenyaeva

(√7-√2)(√7-3√3) помогите, пожалуйста, упростить выражение.

Ответы

Автор ответа: nafanya2014

$(sqrt{7}- sqrt{2})( sqrt{7}-3 sqrt{3})= sqrt{7}cdot sqrt{7} - sqrt{2}cdot sqrt{7}-3cdot sqrt7} cdot sqrt{3} +3 cdotsqrt{2}cdot sqrt{3}$
=7-√14 - 3√21 +3√6

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