7x^2x-8 = 0 имеет 2 корня
D = 1+224 = 225 = 15^2
x1 = 1-15/14 x2 = 1+15/14
x1 = -1 x2 = 1 2/14
х^2+10х+16 = 0 имеет 2 корня
D = 100 - 64 = 36 = 6^2
x1 = 10-6/2 x2 = 10+6/2
x1 = 2 x2 = 8
7x^2x-8 = 0 имеет 2 корня
D = 1+224 = 225 = 15^2
x1 = 1-15/14 x2 = 1+15/14
x1 = -1 x2 = 1 2/14
х^2+10х+16 = 0 имеет 2 корня
D = 100 - 64 = 36 = 6^2
x1 = 10-6/2 x2 = 10+6/2
x1 = 2 x2 = 8