Math, asked by janovinxavier9842322, 11 days ago

Ifx3+12x+10ax+1999 definitely has a positive zero, if and only if

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Answered by ISTUDIESI

2

If a < 0, then P(x) = x3 + 12x2 + 10ax + 1999 has 2 changes of sign. ∴ P (x) has atmost two positive roots.

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