Найдите целые решения уравнений: 1)х^4 - 16,25х^2 + 4 = 0 2)х^4 - 1,36х^2 + 0.36 = 0 3)х^4 -25,16х^2 +4 = 0 4)х^4 - 4,36х^2 + 1,44 =0

1) D = 264,0625 - 16 = 248,0625 = (15,75)² x² = (16,25 + 15,57)/2 = 32/2 = 16 x1 = -4 x2 = 4 2) D = 1,8496 - 1,44 = 0,4096 = (0,64)² x² = (1,36 + 0,64)/2 = 1 x1 = -1 x2 = 1 3) D = 633,0256 - 16 = 617,0256 = (24,84)² x² = (25,16 + 24,84)/2 = 50/2 = 25 x1 = -5 x2 = 5 4) D = 19,0096 - 5,76 = 13,2496 = (3,64)² x² = (4,36 + 3,64)/2 = 8/2 = 4 x1 = -2 x2 = 2