Решение:
a) (3x - 2)² - (3x - 4) (4 + 3x) = 0
9x² - 12x + 4 - (12x + 9x² - 16 - 12x) = 0
9x² - 12x + 4 - 12x - 9x² + 16 + 12x = 0
-12x + 20 = 0
-12x = -20
x = 20/12 = 5/3
б) 25y² – 64 = 0
25y² = 64
y² = 64/25
y = ± √(64/25)
y = ± 8/5
Ответы:
a) x = 5/3
б) y = ± 8/5