Answered

IE = (x-1) ft and LK = (x+2) ft. if its area is 44 ft2, how long are IE and LK?

Sagot :

A = L x W
A= 44
IE= x-1
LK= x+2

IE = x-1
IE + 1 = x

LK = x+2
LK = (IE + 1) + 2
LK = IE + 3

44 = IE x LK
44 = IE x (IE + 3)
44 = IE² + 3IE
44 = (x-1)² + 3(x-1)
44 = x²-2x+1 + 3x-3
44 = x²+x-2
44 + 2 = x² + x
46 = x² + x