Решение:
a > 0
x0 = -b/2a
По графику x0 = -2
(–) = -(b)/+
b > 0
-b = x0•2a
a = 1
b = -(-2•1)
b = -(-2)
b = 2
Ответ: 2
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Решение:
a > 0
x0 = -b/2a
По графику x0 = -2
(–) = -(b)/+
b > 0
-b = x0•2a
a = 1
b = -(-2•1)
b = -(-2)
b = 2
Ответ: 2