1.

If `c>0` and `4a+c

Answer» `f(x) = ax^2 - bx +c`
`f(0) = 0-0 +c`
`f(0) = c> 0`
`f(-2)=4a-2b+c`
`4a +c < 2b`
`4a +c - 2b < 0`
`f(2) < 0`
`f(0) > 0 & f(2) < 0`
`f(x) ` changes it sign between 0 & 2
answer is `(0,2)`
option a is correct


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