Jawabanmu

2014-05-30T20:02:18+07:00
F(x) = a(x - 2)² + 1
f(-1) = a(-1 - 2)² + 1 = 10
a = 1
f(x) = x² - 4x + 4 + 1
f(x) = x² - 4x + 5
a + b + c = 1 - 4 + 5 = 2