
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

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

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

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




Thus ;



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Point :
Remember from now on ,
In quadratic functions ;
if :

The function has two roots
if :

The function has just one root
if :

The function doesn't have any root.
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Thus , ( x² + 6x + 13 ) doesn't have any root.
So ; ( x = - 2 ) & ( x = - 4 ) are the only roots.
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And we're done....♥️♥️♥️♥️♥️