Posted by Lee on Friday, January 4, 2013 at 10:36am.
let y = ax^2+bx+c
it's easy to see that c=-6, so
4a-2b = 10
16a + 4b = 70
(a,b)=(4,3) and so
y = 4x^2+3x-6
thank you, helped explaining the answer
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