Find the number of real roots in the equation, $x^{2} + 3 x - 9 = 0$

1

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2

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0

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None

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Solution

The correct option is A $2$
$Δ \geq 0$ for real roots
$b^{2} - 4 a c$
$= 9 + 36$
$= 45 \geq 0$ which is true .
$∴$ it has 2 real roots.

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