Bonjour,
9 - d * d + 3 * (5 + d)
= 9 - d² + 15 + 3d
= -d² + 3d + 24
Bonjour;
9 - d * d + 3 * ( 5 + d)
= 9-d²+15 +3d
= -d² +3d +24