SOLUTION: what are the sides of a rectangle whose area is 448 ft squared? one side is x+2 ft and the other 3x-4 ft

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Question 950660: what are the sides of a rectangle whose area is 448 ft squared?
one side is x+2 ft and the other 3x-4 ft
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%28x%2B2%29%283x-4%29=448
3x%5E2-4x%2B6x-8=448
3x%5E2%2B2x-8=448
3x%5E2%2B2x-456=0
%28x-12%29%283x%2B38%29=0
Only the positive solution makes sense here.
x-12=0
x=12
.
.
So then,
x%2B2=12%2B2=14ft
3x-4=3%2812%29-4=36-4=32ft