For y-ax2-bx-c- a-0 and - - be the roots of ax2-bx-c-0 such that - Then y-0 for all x-

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Methods of Solving a Quadratic Equation

For y=ax2+bx+...

Question

$For y = a x^{2} + b x + c, a > 0 and α, β$ be the roots of $a x^{2} + b x + c = 0$ such that $α < β .$ Then $y < 0$ for all $x \in$

(α, β)

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(β, \infty)

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(- \infty, α)

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Solution

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