Bonsoir
Oui bien sûr!
8+2*(x-3)
= 8 + 2*x-2*3
la multiplication est prioritaire
= 8 + 2x - 6
= 2x + 2
5x(2x-6)
= 5x*2x-6*5x
= 10x² - 30x
(-4-3x)*2
= -4 * 2 - 3x*2
= -8 - 6x
-3(4-x²)
= -3*4 -x²*-3
= -12 + 3x²
10x - 3(4x-7) +9
= 10x-3*4x-3*-7 + 9
= 10x -12x + 21+9
= -2x +30
(4x²-3)*2+4x
= 2*4x²-3*2+4x
= 8x²-6+ 4x