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firuza9
@firuza9
July 2022
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Пожалуйста решите систему уравнений:
у2=5х+1
у=2х+1
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PENG
Verified answer
(2x + 1)² = 5x + 1
4x² + 4х + 1 = 5x + 1
4х² + 4х - 5х +1 - 1 = 0
4х² - х = 0
х ( 4х - 1) = 0
х = 0 или 4х = 1
х = 0,25
при х=0 у= 2 ·0 +1 = 1
при х=0,25 у = 2 · 0,25 + 1 = 1,5
Ответ: ( 0 ; 1) ; ( 1 ; 1,5 )
3 votes
Thanks 2
firuza9
Здесь y у квадрате а не 2у
firuza9
у в квадрате
PENG
исправил
firuza9
Спасибо
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Answers & Comments
Verified answer
(2x + 1)² = 5x + 1
4x² + 4х + 1 = 5x + 1
4х² + 4х - 5х +1 - 1 = 0
4х² - х = 0
х ( 4х - 1) = 0
х = 0 или 4х = 1
х = 0,25
при х=0 у= 2 ·0 +1 = 1
при х=0,25 у = 2 · 0,25 + 1 = 1,5
Ответ: ( 0 ; 1) ; ( 1 ; 1,5 )