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If the equation `a x^2+b x+c=0(a >0)` has two real roots `alphaa n dbeta` such that `alphalt-2` and `betagt2,` then which of the following statements is/are true? (a)`a-|b|+c<0` (b)`clt0,b^2-4a cgt0` (c) `4a-2|b|+c<0` (d) `9a-3|b|+c<0`

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