Coucou
3(x+8) = 3x+24
15(3+y) = 45+15y
20(5-y) = 100-20y
x(x+1) = x²+x
a(12+a) = 12a+a²
25(25+y) = 625+25y
3×p+4 = 3p+4
7+4y = 7+4y
2×π×R = 2πR
3×6×a×b = 18ab
3×a×6×a×a = 18a³
