Answered

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 ; )

Sagot :

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.