Решите уравнение (а). Created by NOH8. matematika-ru

Решите уравнение (а)...

NOH8 @NOH8

July 2022 1 25 Report

Решите уравнение (а)

Answers & Comments

TARTILLO

Verified answer

(x²+3y²-7)²+√(3-xy-y²)=0

a=(x²+3y²-7)²≥0
b=√(3-xy-y²)≥0 a+b=0⇔ a=0 и b=0

⇔(x²+3y²-7)=0 и
(3-xy-y²)=0

x=(3-y²)/y

[(3-y²)/y]²+3y²-7=0  ⇔ 4y⁴-13y²+9=0    1)y²=1    y1=-1 y2=1
x1=-2 x2=2

2)y²=9/4 y3=-3/2   y4=3/2
x3=-1/2 x4=1/2

ппроверка
(-2;-1)
(x²+3y²-7)=0 и 4+3-7=0
  (3-xy-y²)=0 3-2-1=0

(2;1)
(x²+3y²-7)=0 и 4+3-7=0
  (3-xy-y²)=0 3-2-1=0

(-1/2;-3/2)
(x²+3y²-7)=0 и 1/4+3·(9/4)-7=0
  (3-xy-y²)=0 3-3/4-9/4=0

(1/2;3/2)
(x²+3y²-7)=0 и 1/4+3·(9/4)-7=0
  (3-xy-y²)=0 3-3/4-9/4=0

1 votes Thanks 2

Answers & Comments

Verified answer

nomera 1 i 2 bez perevodchika pozhalujsta esli ne znaete francuzskij pozhalujs

1201 reshite pozhalujsta nuzhno srochno

reshit sistemu uravnenij5561af02d844e5d25e7f824b58ddd658 83251

srochno reshite zadanie s5 pozhalujsta

2h466fc9755bf490cab422e0dde08b45b15 71157

1201 v otvete poluchaetsya 1

2644 reshite pozhalujsta nuzhno srochno

1 kak nazyvayutsya znaki himicheskih elementov i chislovyh indeksov pokazyvayushie s

reshite neravenstvo 1 x2 4x lt 3x 2 x2x 5 gt 3x

reshite zadachu po himii 30 ballov

рекомендуемые вопросы

Helpful Links

Helpful Social