Ответы на вопрос:
X^4 - 7x^2 + 12 = 0 x^2 = a ( a > 0 ) a^2 - 7a + 12 = 0 d = 49 - 48 = 1 ; √ d = 1 a1 = ( 7 + 1 ) : 2 = 4 a2 = 6 : 2 = 3 x^2 = a x^2 = 4 x1 = 2 x2 = ( - 2 ) x^2 = 3 x3 = √ 3 x4 = - √ 3 =========== уравнение 2 x^4 - 11x^2 + 18 = 0 x^2 = a ( a > 0 ) a^2 - 11a + 18 = 0 d = 121 - 72 = 49 ; √ d = 7 a1 = ( 11 + 7) : 2 = 9 a2 = 4 : 2 = 2 x1 = 3 x2 = - 3 x3 = √ 2 x4 = - √ 2
Популярно: Алгебра
-
Никита2022006.04.2020 09:42
-
YounMing16.10.2020 21:22
-
eminimanov19819.01.2023 11:15
-
пистолетМакарова09.03.2022 09:35
-
lerka16022.05.2021 14:25
-
125DVV07.11.2021 23:30
-
нурана430.07.2021 03:19
-
BroKeNxHeArT30.09.2021 06:41
-
Ральфф06.11.2022 12:33
-
Барвлвовь20.07.2021 23:30