Article: Once a spill or leak has occurred, immediately press a clean, dry towel into the mattress to absorb the liquid. Replace your towel once it becomes soaked. Try to get as much of the liquid up as possible. If your mattress is wet from bodily fluids, like urine or blood, you’ll need to use an enzyme cleaner. Other stains can be treated with a mixture of 2 parts hydrogen peroxide to 1 part liquid dishwashing soap. Brush the stain remover into the mattress with a toothbrush, then wipe it up after 5 minutes with a cool, damp cloth. If only a small amount of liquid got on the mattress, like if you spilled a glass of water, you can quickly dry it with a hairdryer. Aim the hairdryer at the wet spot and use a warm, not hot, setting. Keep the hairdryer moving for best results. If rain blew in from the window, for example, a portion of your mattress may be soaked. Turn on a wet/dry vacuum and run the nozzle over the wet parts of the mattress in long, even strokes to suck up the liquid. Disinfect the vacuum nozzle first, as you don’t want to touch your mattress with a nozzle that’s been stuck into cobweb-filled corners of the garage. Simply wipe it with an antibacterial wipe, inside and out, and let it dry. If your mattress was moved during a rainstorm, for instance, it’s bound to be pretty wet. Spread a layer of clean kitty litter over the wet areas of the mattress. Then, cover the kitty litter with a towel and firmly press the kitty litter into the mattress. Vacuum up the kitty litter with a wet/dry vacuum. If the mattress is still wet, spread a fresh layer of kitty litter on the mattress and allow it to sit for 1 to 2 hours. Then, vacuum it up. After you’ve soaked up as much of the liquid as possible, take the mattress outdoors and set it in the sunlight. Choose the hottest, sunniest spot on your property. Be sure to spread plastic sheeting or an old blanket beneath the mattress so it doesn’t get dirty. Sunlight has the added benefit of killing bacteria in your mattress, as well. Open as many windows as possible to get the air moving around the mattress. If both sides are wet, stand it on one end or lean it against a solid surface so air can flow freely around it. Set up a fan and/or a dehumidifier, depending on what you have handy. Direct the fan at the mattress to increase the air circulation. Unfortunately, time is essential for drying a mattress. If the mattress is soaked, like from a ceiling leak, it’s best to make alternative sleeping arrangements for the night, as it may take up to 24 hours to fully dry. Covering the mattress with sheets and bedding when it’s wet will lead to mold and mildew growth, which is hazardous to your health.
Question: What is a summary of what this article is about?
Blot the area with clean, dry towels. Treat any stains. Dry small spots with a hairdryer. Use a wet/dry vacuum to soak up excess liquid. Press clean kitty litter into the mattress to absorb liquid. Dry a soaked mattress in direct sunlight, if possible. Provide plenty of air circulation if drying indoors. Expect to wait a few hours.

In the formula, xn{\displaystyle x_{n}} = the term in the sequence you are trying to find, n{\displaystyle n} = the position number of the term in the sequence, and ϕ{\displaystyle \phi } = the golden ratio.  This is a closed formula, so you will be able to calculate a specific term in the sequence without calculating all the previous ones. This formula is a simplified formula derived from Binet’s Fibonacci number formula.  The formula utilizes the golden ratio (ϕ{\displaystyle \phi }), because the ratio of any two successive numbers in the Fibonacci sequence are very similar to the golden ratio. The n{\displaystyle n} represents whatever term you are looking for in the sequence. For example, if you are looking for the fifth number in the sequence, plug in 5. Your formula will now look like this: x5{\displaystyle x_{5}}=ϕ5−(1−ϕ)55{\displaystyle {\frac {\phi ^{5}-(1-\phi )^{5}}{\sqrt {5}}}}. You can use 1.618034 as an approximation of the golden ratio. For example, if you are looking for the fifth number in the sequence, the formula will now look like this: x5{\displaystyle x_{5}}=(1.618034)5−(1−1.618034)55{\displaystyle {\frac {(1.618034)^{5}-(1-1.618034)^{5}}{\sqrt {5}}}}. Remember to use the order of operations by completing the calculation in parentheses first: 1−1.618034=−0.618034{\displaystyle 1-1.618034=-0.618034}. In the example, the equation becomes x5{\displaystyle x_{5}}=(1.618034)5−(−0.618034)55{\displaystyle {\frac {(1.618034)^{5}-(-0.618034)^{5}}{\sqrt {5}}}}. Multiply the two parenthetical numbers in the numerator by the appropriate exponent. In the example, 1.6180345=11.090170{\displaystyle 1.618034^{5}=11.090170}; −0.6180345=−0.090169{\displaystyle -0.618034^{5}=-0.090169}. So the equation becomes x5=11.090170−(−0.090169)5{\displaystyle x_{5}={\frac {11.090170-(-0.090169)}{\sqrt {5}}}}. Before you divide, you need to subtract the two numbers in the numerator. In the example, 11.090170−(−0.090169)=11.180339{\displaystyle 11.090170-(-0.090169)=11.180339}, so the equation becomes x5{\displaystyle x_{5}}=11.1803395{\displaystyle {\frac {11.180339}{\sqrt {5}}}}. The square root of 5, rounded, is 2.236067. In the example problem, 11.1803392.236067=5.000002{\displaystyle {\frac {11.180339}{2.236067}}=5.000002}. Your answer will be a decimal, but it will be very close to a whole number. This whole number represents the number in the Fibonacci sequence.  If you used the complete golden ratio and did no rounding, you would get a whole number. It’s more practical to round, however, which will result in a decimal.  In the example, after using a calculator to complete all the calculations, your answer will be approximately 5.000002. Rounding to the nearest whole number, your answer, representing the fifth number in the Fibonacci sequence, is 5.
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One-sentence summary --
Set up the formula xn{\displaystyle x_{n}}=ϕn−(1−ϕ)n5{\displaystyle {\frac {\phi ^{n}-(1-\phi )^{n}}{\sqrt {5}}}}. Plug the number for n{\displaystyle n} into the formula. Substitute the golden ratio into the formula. Complete the calculations in parentheses. Calculate the exponents. Complete the subtraction. Divide by the square root of 5. Round to the nearest whole number.