Bonjour, pouvez-vous m’aider svp ? :)
Il faut simplifier ces calculs :
a) (2x+4)*(2x-4)
b) (4*(2x*2x-8))/2
Mercii
Il faut simplifier ces calculs :
a) (2x+4)*(2x-4)
b) (4*(2x*2x-8))/2
Mercii
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Bonsoir,
a) (2x+4)*(2x-4)
= 4x² -8x +8x -16
= 4x² -16
b) (4*(2x*2x-8))/2
= (4 *( 4x²-8)) /2
(16x² -32)/2
= 2( 8x² -16)/2
= 8x² -16
= 8(x²-2)