Répondre :
A) x² +10x +25 = (x) ² + 2 X (x) X 5 + ( 5)² = ( x + 5 )²
B) 4x² - 12x + 9 = ( 2x )² - 2 X 2x X 3 + ( 3 )² = (2x - 3)²
UTLISER LES IDENTITES REMARQUABLES RECOPIER ET COMPLETER A) x² +10x +25 = ( ... ) ² + 2 X ... X ... + ( ... )² x² + 10x + 25 = ( ... + ... )² B) 4x² - 12x + 9 = ( ... )² - 2 X ... X ... + ( ... )² 4x² - 12x + 9 = ( ... - ...)²
AIDEEER MOOIII SVP !!!!
A) x² +10x +25 = (x) ² + 2 X (x) X 5 + ( 5)² = ( x + 5 )²
B) 4x² - 12x + 9 = ( 2x )² - 2 X 2x X 3 + ( 3 )² = (2x - 3)²