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# Glossary 6B — Barrera Castillo & Vargas Garcia

Glossarys of Matematics and Geometry
by

## Angie Barrera

on 10 April 2011

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#### Transcript of Glossary 6B — Barrera Castillo & Vargas Garcia

used to indicate the
square root... of any number Illustration: Real Life Example: Mathematics Glossary 6B The radical symbol seems to be an angle and also a check mark History: This symbol first appeared in print,
in Rudolff's Coss in 1525,
which is having its square root... Illustration: Real Life Example: 64 square mts 8 mts Was created by David Smith in 1958,
like we know right now,
but the first radicand was created also in 1525. History: Christoff Rudolff Sources http:// en.wikipedia.org/wiki/Square_root Index Video of Radicands The index shows how many times does the radicand must be multiplied by itself. The index is also called power or exponent. Illustration: History: Appeares in the 23th century in the babylonian (Babylon) times. Sources: http://www.mathwords.com/r/radicand.htm http://www.ehow.com/about_513780-exponents.htm Video of Index
http://www.mathsisfun.com/definitions/index-power-html Perfect Roots Perfect roots are the roots
that, give exact answers Illustration: Real Life Example: Sources:
Mathematics notebook Non - Perfect Roots Illustration: These roots are the ones in which the answer is
an irrational number Real Life Example & Sources Mathematics notebook http://en.wikipedia.org/wiki/Square_root Adding and Substracting :
Radical Expressions To add and substract radical expressions, the roots must have same radicand (number inside the radical sign) and same index (the times the radicand is multiplied by itself), then you can add or/and substract Real Life Example &