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Introduction

If x2+ax-3x...

Question

If $x^{2} + a x - 3 x - (a + 2) = 0$ has real and distinct roots, then minimum value of $(a^{2} + 1) (a^{2} + 2)$ is

1

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0

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\frac{1}{2}

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\frac{1}{4}

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Solution

The correct option is C $\frac{1}{2}$

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