👤

Sagot :

Ex 2 (2x+3)(5-x) - (2x+3)^2 2xX5-2xXx+3X5-3Xx-2xX2x+2xX3 10x-2x^2+15-3x-4x^2+6x 13x-6x^2+15 PS: T-Shirt LK *o* Tyga !

Bonjour

3)

M = (3x-4)²-(x-5)(3x-4)

développer

M = 6x²-5x-4

factoriser

M= (3x-4)(3x-4-x+5) 

M =( 3x-4)(2x+1)

M = 0 si l'un des facteurs = 0

3x-4 = 0 si x = 4/3 

2x+1 = 0 si x = -1/2 

si x = -2

M = -10 * -3 = 30

© 2024 IDNLearn. All rights reserved.