SOLUTION: The width of a rectangular table is 1.2 feet less than its length. If the area of the table is 12.4 square​ feet, find its dimensions.

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Question 1110893: The width of a rectangular table is 1.2 feet less than its length. If the area of the table is 12.4 square​ feet, find its dimensions.
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
x%28x-1.2%29=12.4
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x%5E2-1.2x=12.4
x%5E2-1.2x-12.4=0
discriminant is 1.2%5E2-4%2A%28-12.4%29=1.44%2B49.6=51.04

x=%281.2%2Bsqrt%2851.04%29%29%2F2
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