CHARLES R. answered • 11/02/12

Get Expert Help in Chemistry, Algebra, Trigonometry, Computers, Excel

Terry has the side of the square correctly written out. If the problem is asking you about the sides of the rectangle as noted in the question I saw, then follow up Terry's calculation by figuring out each side of the rectangle using the original information:

First side of rectangle is X-3 so 12-3 gives you 9 and second side is X+4 which gives you 12+4 or 16. Either answer of 9 or 16 would be considered to be correct for the problem that asks "Find the length of one side of the rectangle". You can then check your work by calculating the area of the rectangle and comparing it to the area of the square: area of rectangle = 9X16=144 which is same as area of square 12X12=144 so we can be sure that the values 9 and 16 make sense.