Posted by rick on Sunday, April 8, 2012 at 2:25am.
f(2) = 2
f(1) = -2
8a + 4b + 6 - 4 = 2
a + b + 3 - 4 = -2
8a + 4b = 0
a + b = -1
so, b = -2a
a = 1
b = -2
f(x) = x^3 - 2x^2 + 3x - 4
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