Ответ:
(7+2×√7×1+1)-2√7= 8+2√7-2√7=8
(√(7) + 1)^2 - 2 √(7) = (√7+1)^2 - 2√7 = 7 + 2√7 + 1 - 2√7 = 7 + 1 = 8.
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Ответ:
(7+2×√7×1+1)-2√7= 8+2√7-2√7=8
Ответ:
(√(7) + 1)^2 - 2 √(7) = (√7+1)^2 - 2√7 = 7 + 2√7 + 1 - 2√7 = 7 + 1 = 8.