Предмет: Математика, автор: Ninaaverina1

Помогите решить
(3+2корень из 7)в квадрате

Ответы

Автор ответа: Чудейко

2

=3*3+2*3*2*корень из 7+2*2*7=9+12*корень из 7+28=37+12*корень из 7

Автор ответа: flsh

2

(3 + 2√7)² = 3² + 2·3·2√7 + (2√7)² = 9 + 12√7 + 28 = 37 + 12√7

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