Решение:
1.
ОДЗ: х ≠ 4
х + 1 = 3 · (х - 4)
х + 1 = 3х - 12
2х = 13
х = 6,5
2.
ОДЗ: х ≠ ±2
x² + 30 = (x - 3)(x - 2) + 6(x + 2)
x² + 30 = x² - 5x + 6 + 6x + 12
x² + 30 = x² + x + 18
x = 30 - 18
x = 12
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Answers & Comments
Решение:
1.
ОДЗ: х ≠ 4
х + 1 = 3 · (х - 4)
х + 1 = 3х - 12
2х = 13
х = 6,5
2.
ОДЗ: х ≠ ±2
x² + 30 = (x - 3)(x - 2) + 6(x + 2)
x² + 30 = x² - 5x + 6 + 6x + 12
x² + 30 = x² + x + 18
x = 30 - 18
x = 12