Предмет: Алгебра, автор: adilzhansjdjdjd

Сделайте пожалуйста умоляю номер 163(1,2)

Приложения:

Ответы

Автор ответа: m11m
0
1) 3х²-5х-2=0
   х²-⁵/₃ х-²/₃=0
Х₁*Х₂=-²/₃
Х₁+Х₂=⁵/₃
(Х₁+Х₂)²=(Х₁)²+2Х₁Х₂+(Х₂)²
(⁵/₃)²=2*(-²/₃)+(Х₁)²+(Х₂)²
²⁵/₉=-⁴/₃+(Х₁)²+(Х₂)²
(Х₁)²+(Х₂)²=²⁵/₉+⁴/₃=²⁵/₉+¹²/₉=³⁷/₉
Ответ: ³⁷/₉

2) 6Х²+5Х-1=0
Х²+⁵/₆Х-¹/₆=0
Х₁*Х₂=-¹/₆
Х₁+Х₂=-⁵/₆
(Х₁+Х₂)²=(Х₁)²+2Х₁Х₂+(Х₂)²=(Х₁)²+(Х₂)²+2*(-¹/₆)=(Х₁)²+(Х₂)²-¹/₃
(-⁵/₆)²=(Х₁)²+(Х₂)²-¹/₃
²⁵/₃₆ + ¹/₃=(Х₁)²+(Х₂)²
³⁷/₃₆=(Х₁)²+(Х₂)²
    1     +      1     =  (Х₂)²+(Х₁)²   =  ³⁷/₃₆ ³⁷/₃₆   =  37 * 36  =37
   (Х₁)²        (Х₂)²       (Х₁)²(Х₂)²       (-¹/₆)²     ¹/₃₆        36*1
 
Ответ: 37
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