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Square roots
(including old symbols and problems in solving radical
expressions)
What is Square Root?
OFor any given number, it is another number that when
multiplied by itself equals the given number.
Symbol Origin Author
R 1436-1476 Regiomontanus
√ 1525 Christoff Rudolff
n√ 1629 Albert Girard
Symbol Origin Author
√ � 1637 René Descartes
· 1698 Gottfried Leibniz
∏ 1812 Carl Friedrich Gauss
Symbol Origin Author
x 1902 J. Willard Gibbs
ℤ 1930 Edmund Landau
Word Problem!O Ms. Sharon grouped the grade 9
into two groups and the first group includes Julius, Jansen, Ella
and Rose Ann and they were assigned to cut a square-shaped cardboard box. Find the length of the sides of a square whose area
is √72 square centimeters.
Solution!A = S2
72 = S2
√72 = √S2
√9•8 = √S2
3 √8 = S6 √2=S
Thanks for listening!
Prepared by: Julius :)