Sagot :
Answer:
the length is 19
the width is 12
Step-by-step explanation:
if x= width, x+7= length then x(x+7) = 228, x^2 + 7x = 228, x^2 + 7x - 228 = 0, (x+19)(x-12) = 0, x+19=0, x-12= 0 , x= -19, x= 12 ,
substitute x with 12 or -19, width: x=12 and length: x+7= 12+7= 19
// width: x= -19 and length: x + 7= -19 + 7= -12