Bonjour , :) =3x( -5x +10) + 12x + 3x² ; =(2x - 1)(5x + 6); =(-6x + 1)(-x + 5); =4x(-x + 5); =(5 - 6x); = (4-7x)(4+ 7x): = (6+4x) – 16x’ – 48x ; = (-5x + 2)(-2x
Mathématiques
oceanedelestrescw
Question
Bonjour , :)
=3x( -5x +10) + 12x + 3x² ;
=(2x - 1)(5x + 6);
=(-6x + 1)(-x + 5);
=4x(-x + 5);
=(5 - 6x);
= (4-7x)(4+ 7x):
= (6+4x) – 16x’ – 48x ;
= (-5x + 2)(-2x – 5) – (14x - 4) Developper et reduire ces expressions merci beaucoup ; )
=3x( -5x +10) + 12x + 3x² ;
=(2x - 1)(5x + 6);
=(-6x + 1)(-x + 5);
=4x(-x + 5);
=(5 - 6x);
= (4-7x)(4+ 7x):
= (6+4x) – 16x’ – 48x ;
= (-5x + 2)(-2x – 5) – (14x - 4) Developper et reduire ces expressions merci beaucoup ; )
1 Réponse
-
1. Réponse maudmarine
Bonjour
Developper et reduire ces expressions
=3x( -5x +10) + 12x + 3x²
= -15x²+ 30x + 12x + 3x²
= - 12x² + 42x
=(2x - 1)(5x + 6);
= 10x²+ 12x - 5x - 6
= 10x² + 7x - 6
=(-6x + 1)(-x + 5);
= 6x² - 30x - x + 5
= 6x² - 31x + 5
=4x(-x + 5);
= - 4x²+20x
=(5 - 6x)-> Erreur
(5 - 6x)²= 25 - 60x + 36x²
= (4-7x)(4+ 7x):
= 16 - 49x²
= (6+4x) – 16x’ – 48x ;
= 6 + 4x - 16x- 48x
= 6 - 60x
= (-5x + 2)(-2x – 5) – (14x - 4)
=10x² + 25x - 4x - 10 - 14x + 4
= 10x² + 7x - 6.