Réponse :
EX3
6 ( 4x + 10 ) = 6 X 4x + 10 X6 = 24x + 60
6 ( 9x + 2 ) = 6 X 9x + 6 X 2 = 54x + 12
11 ( 3x +7 ) = 11 X 3x + 11 X 7 = 33x + 77
9 ( 8x + 9 ) = 9 X 8x +9 X 9 = 72x + 81
6 ( 2y + 4 ) = 6 X 2y + 6 X 4 = 12y + 24
12 ( 8x + 12 ) = 12 X 8x = 12 X 12 = 96 + 144
4 ( 10y + 1 ) = 4 X 10y + 4 X 1 = 40y + 4
1 ( 3x + 12 ) = 1 X 3x + 1 X 12 = 3x + 12
EX4
2y ( 5y + 1 ) = 2y X 5y +2y X 1 = [tex]10y^{2}[/tex] + 2y
2y ( 9x + 12 ) =2y X 9x + 2y X 12 = 18xy + 24y
8x ( x + 4) = 8x X x + 8x X 4 = + 32x
2x ( 8x + 8 ) = 2x X 8x + 2x X 8 = [tex]16x^{2}[/tex] + 16x
4x ( 12y + 1 ) = 4x X 12y + 4x X 1 = 48xy + 4x
6y ( x +10 ) = 6y X x + 6y X 10 = 6xy + 60y
5x ( 6y + 8 ) = 5x X 6y + 5x X 8 = 30xy + 40x
4x ( 10x + 10 ) = 4x X 10x + 4x X 10 = [tex]40x^{2}[/tex] + 40x
EX5
Explications étape par étape :
