<span>(2√5)²/8 = 4*5/8 = 5/2 = 2,5
Ответ: В</span>
х^2 - 35 = 2х
х^2 - 2х - 35 = 0
a = 1 b = -2 c = -35
D = b^2 - 4*a*c = 4 + 4*35 = 4 + 140 = 144 = 12^2
x1 = (-b + ✓D) / 2*a = (2 + 14) / 2 = 8
х2 = (-b - ✓D) / 2*a = (2 - 14) / 2 = -6.
Ответ: х = 8; -6.
<span>m-(a-k-b)
=m-a+k+b
!!!!!!!!!!!!!!!!!!!!
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