bonjour
1 ) AE = x
2) AB = 2 x + 1
3 ) AG = x - 3
4) Périmètre AEFG = 2 ( x + x - 3 ) = 2 x + 2 x - 6 = 4 x - 6
5 ) Aire AEFG = x ( x - 3 ) = x² - 3 x
6 ) Aire ABCD = x ( 2 x + 1 )= 2 x² +x
