Sagot:
Ang lapad ay # = (5x-8) #
Paliwanag:
Ang lugar ng isang rektanggulo ay
# A = L * W #
# A = 20x ^ 2-27x-8 #
# L = 4x + 1 #
# W = A / L = (20x ^ 2-27x-8) / (4x + 1) #
Nagsasagawa kami ng mahabang dibisyon
#color (white) (aaaa) ## 20x ^ 2-27x-8 ##color (white) (aaaa) ##|## 4x + 1 #
#color (white) (aaaa) ## 20x ^ 2 + 5x ##color (white) (aaaaaaaaa) ##|## 5x-8 #
#color (white) (aaaaaaa) ## 0-32x-8 #
#color (white) (aaaaaaaaa) ## -32x-8 #
#color (white) (aaaaaaaaaaa) ##-0-0#
Samakatuwid, # W = 5x-8 #