BONSOIR
Explications étape par étape
X²-16=0
X1=4
X2=-4
X+3=0
X=-3
X -4 -3 0 4 ∞
__________________________________________________________
X²-16 +++++++ 0 _ _ _ _ _ 0 ++++++++++++++++++++
X+3 _ _ _ _ _ _ _ _ 0+++++++++++++++++++++++++++++++++++++++
X²-16/X+3 _ _ _ _ 0 ++++║- - -- - - - - - - - - 0+++++++++++++++++++
X∈[-4,-3)∪(4,∞]
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BONSOIR
Explications étape par étape
X²-16=0
X1=4
X2=-4
X+3=0
X=-3
X -4 -3 0 4 ∞
__________________________________________________________
X²-16 +++++++ 0 _ _ _ _ _ 0 ++++++++++++++++++++
__________________________________________________________
X+3 _ _ _ _ _ _ _ _ 0+++++++++++++++++++++++++++++++++++++++
__________________________________________________________
X²-16/X+3 _ _ _ _ 0 ++++║- - -- - - - - - - - - 0+++++++++++++++++++
X∈[-4,-3)∪(4,∞]