Решите уравнения, применяя фсу: а) (3х-1)² - 8(х+1)² = (х+2)(х-2)
б) (2х+1)² - 3(х-5)² = (х+3)(х-3)
в) (3+х)² + (5-2х)(5+2х) - 3(5-х²) =1
б) (2х+1)² - 3(х-5)² = (х+3)(х-3)
в) (3+х)² + (5-2х)(5+2х) - 3(5-х²) =1
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