Ответ:
- 12.
Объяснение:
(3 - √5)²•(14 + 6√5) - 8•√(12 1/4) =
= (9 - 6√5 + 5)•(14 + 6√5) - 8•√(49/4) =
= (14 - 6√5)•(14 + 6√5) - 8•7/2 =
= 14² - (6√5)² - 4•7 = 196 - 180 - 28 = - 12.
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Ответ:
- 12.
Объяснение:
(3 - √5)²•(14 + 6√5) - 8•√(12 1/4) =
= (9 - 6√5 + 5)•(14 + 6√5) - 8•√(49/4) =
= (14 - 6√5)•(14 + 6√5) - 8•7/2 =
= 14² - (6√5)² - 4•7 = 196 - 180 - 28 = - 12.