Пошаговое объяснение:
4х² = 14х | : 2
2х² = 7х
2х² - 7х = 0
х · (2х-7) = 0
1) х = 0.
2) 2х - 7 = 0; х=3,5.
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4х · 2 = 14х
8х = 14х
8х - 14х = 0
-6х = 0
х = 0 : (-6)
х = 0
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Пошаговое объяснение:
4х² = 14х | : 2
2х² = 7х
2х² - 7х = 0
х · (2х-7) = 0
1) х = 0.
2) 2х - 7 = 0; х=3,5.
- - - - - - - - - - - - - - -
4х · 2 = 14х
8х = 14х
8х - 14х = 0
-6х = 0
х = 0 : (-6)
х = 0