Ответ:
х1 = -8
х2 = 2/5 (0,4)
Решение:
(5-2х)² - 9(х+1)² = 0
(5-2х-3(х+1)) × (5-2х+3(х+1)) = 0
(5-2х-3х-3)×(5-2х+3х+3) = 0
(2-5х) × (8+х) = 0
2-5х = 0
х = 2/5 = 0,4
або
8+х = 0
х = -8
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Answers & Comments
Ответ:
х1 = -8
х2 = 2/5 (0,4)
Решение:
(5-2х)² - 9(х+1)² = 0
(5-2х-3(х+1)) × (5-2х+3(х+1)) = 0
(5-2х-3х-3)×(5-2х+3х+3) = 0
(2-5х) × (8+х) = 0
2-5х = 0
х = 2/5 = 0,4
або
8+х = 0
х = -8