bonjour
2 x ( x + 1 ) = 12
2 x² + 2 x = 12
2 *4 + 4 = 1 2
8 + 4 = 12
12 = 12
donc 2 est solution
3 x - 5 = 5 x - 15
3 x - 5 x = - 15 + 5
- 2 x = - 10
x = 5
donc 5 est solution
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
bonjour
2 x ( x + 1 ) = 12
2 x² + 2 x = 12
2 x² + 2 x = 12
2 *4 + 4 = 1 2
8 + 4 = 12
12 = 12
donc 2 est solution
3 x - 5 = 5 x - 15
3 x - 5 x = - 15 + 5
- 2 x = - 10
x = 5
donc 5 est solution