|2x – 4| = a2 – 9
a2 – 9 < 0
(a – 3)(a + 3) < 0
x ∈ (-3; 3)
a2 – 9 = 0
(a – 3)(a + 3) = 0
a = 3
a = -3
x2 – ax – 5 = 0
b = -a
x1 + x2 = a = -6
a = -6
x2 – bx + 6 = 0
x1 = 3
x1 * x2 = c = 6
x2 = c/x1 = 6/3 = 2
b = x1 + x2 = 3 + 2 = 5
|2x – 4| = a2 – 9
a2 – 9 < 0
(a – 3)(a + 3) < 0
x ∈ (-3; 3)
a2 – 9 = 0
(a – 3)(a + 3) = 0
a = 3
a = -3
x2 – ax – 5 = 0
b = -a
x1 + x2 = a = -6
a = -6
x2 – bx + 6 = 0
x1 = 3
x1 * x2 = c = 6
x2 = c/x1 = 6/3 = 2
b = x1 + x2 = 3 + 2 = 5