A = -3x(-2x + 6)
A = (-3x) * (-2x) + (-3x) * 6
A = 6x² - 18x
B = -x(4x - 2)
B = (-x) * 4x + (-x) * (-2)
B = -4x² + 2x
bonjour;
-3x(-2x+6)-x(4x -2)
=
6x² -18x - 4x² +2x
= 2x² -16x
