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Transcript

Christoph Rudolff

Born: 1499

Died: 1545

  • He was the author of

the first German

textbook on algebra.

  • He introduced the

radicalsymbol for

the square root.

  • The symbol for the square root was first used in print in 1525 in Christoph Rudolff's Coss, which was also the first to use the signs '+' and '-'

Interesting Fact: Square Root has its own day,

although it is not official. It is celebrated on days

when both the day of the month and the month

are the square root of the last two digits of the year.

~The last Square Root Day was March 3, 2009 (3/3/09)

~The next Square Root Day will be April 4, 2016 (4/4/16)

Demonstration

To find square root in a calculator,

press the square root key which looks

like this:

Choose the number you would like to

find the square root of.

For example:

Lastly, end it with closing the number

with parenthesis.

Click 'equals' & your answer should

be:

Examples:

4 is a square root of 16

because 4^2 = 16

Square Root of 144 is 12

Square Root of 2,500 is 50

THANK YOU FOR

WATCHING! :)

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