👤
Answered

vite urgents
1)develloper,reduire et ordonner m expession A=(3x+2x)+(7x-1)(3x+2)
2)factoriser A
3)resoudre l'equation A=0
4)calculer A pour x=-2sur 3

Sagot :

A=(3x+2x)+(7x-1)(3x+2)
 = (7x*3x + 7x * 2x + (-1) * 3x + (-1)* 2x) +(3x* 3x + 3x * 2x + 2*3x + 2* 2x)
 = [21x² + 14x²+ (-3x) + (-2x) ]+ (9x²+ 6x² + 6x+ 4x)
 = (35x² -5x) + ( 15x²+ 10x) 
 = (35x² - 5x + 15x² +10x)
 = 50x² + 5x

Other Questions

© 2024 IDNLearn. All rights reserved.