Bonsoir,
10 (a-b)
5(a+7)
a(7+1)
a( -1 -1) = a( -2)
x( x+3)
x ( 3x+1)
6x -4
5a -2b -10
5x² -2x -7
2x-2 + 15x -21 -3 +3x +10
= 20x -16
x² +3x -10x² +6x -1 +x -7
= -9x²10x -8
