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Tham khảo : 

`(2x - 15)^5 = (2x - 15)^3`

`=> (2x - 15)^5 : (2x - 15)^3 = 1`

`=> (2x - 15)^2 = 1`

`=> (2x - 15)^2 = 1^2`

`=>` $\left[\begin{matrix} 2x-15=1\\ 2x-15=-1\end{matrix}\right.$

`=>` $\left[\begin{matrix} 2x=1 + 15\\ 2x=-1 + 15\end{matrix}\right.$

`=>` $\left[\begin{matrix} 2x=16\\ 2x=14\end{matrix}\right.$

`=>` $\left[\begin{matrix} x=8\\ x=7\end{matrix}\right.$

`=> x in {7;8}`

`0,5+2/3`

`=1/2+2/3`

`=3/6+4/6`

`=10/6`

`=5/3`

Halloween is a celebration that happens on the 31st of October. It originally came from a Christian religious day. The 1st of November is All Saints Day, so Halloween is the eve or night before this. Nowadays it is mainly just an excuse for people to have fun. The holiday was mainly celebrated in America and from there has spread to many other countries. It is meant to be the day, and mainly the night, when monster come out of hiding. This means that people associate scary and frightening things with Halloween. There are three main traditions linked to Halloween. The first is carving pumpkins, the second is decorating your house and the third is trick-or-treating.

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Part 1. Decide whether the following statements are True (T) or False (F). (0.5 pts)

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1. Halloween originated from a day in Christianity. _______

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2. It is not known how many traditions are linked to Halloween. ______

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Part 2. Answer the following questions. (0.5 pts)

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1. Is Halloween celebrated on October 31st? __________________________________

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2. What do people associate with Halloween? ___________________________________