Question

A rectangle has an area of 12 square centimeters and a perimeter of 16 centimeters. Which of the following could be its dimensions

Answer 1

xy=12
2(x+y)=16
x+y=8
x=8-y
(8-y)y=12
y^2-8y+12=0
y^2-6y-2y+12=0
(y-6)(y-2)=0
y= 6 y=2
x=2 x=6