Предмет: Алгебра, автор: dasha1178

ребят,срочно пж
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Автор ответа: Nastjscha
0
1. (√10+5√3 + √10-5√3)2
квадрат , убирает корень общий , остается = 10+5√3+10-5√3
+5√3 и -5√3 взаимно уничтожаются. остается 10+10=20
3. ответ 7 в степени n-1 или 1/7n
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