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Sagot :

MAUDMARINE

Bonjour

Factoriser chacune des expressions où x est un réel:

a(x) = (x+2) (x-3) - (x+2)²

a (x) = (x + 2) [(x - 3) - (x + 2)]

a (x) = (x + 2) (x - 3 - x - 2)

a (x) = - 5 (x + 2)

Hello

a ( x ) = ( x + 2 ) ( x - 3 - x - 2 )

= ( x + 2 ) ( -5 )

= -5 ( x + 2 )

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