1/4c^2 = 7c^2 = 7 * 4c^2 = 28c = ± √28c = ± 2√7
(x - 11)^2 = 81x - 11 = ± 9x = 11 ± 9x = 20 or x = 2
(y + 1)^2 = 9/64y + 1 = ± 3/8y = -1 ± 3/8y = -1 ± 3/8
Таким образом, решения уравнений:c = ± 2√7,x = 20 или x = 2,y = -1 + 3/8 или y = -1 - 3/8.
1/4c^2 = 7
c^2 = 7 * 4
c^2 = 28
c = ± √28
c = ± 2√7
(x - 11)^2 = 81
x - 11 = ± 9
x = 11 ± 9
x = 20 or x = 2
(y + 1)^2 = 9/64
y + 1 = ± 3/8
y = -1 ± 3/8
y = -1 ± 3/8
Таким образом, решения уравнений:
c = ± 2√7,
x = 20 или x = 2,
y = -1 + 3/8 или y = -1 - 3/8.