unit 3 sec 3.2

Unit 3 sec 3.2 Roots of numbers

12 November 2015

23:08

  As you have seen, the number you square is to is called the square root of 2.

In general square root of a number is a number that when multiplied by itself gives you original number.

  Every positive number has to square roots, positive one and a negative one. This symbol ±, which means plus or minus, can be useful when you are working with square rates.

 The positive square root of the positive number is donated by the symbol √.

 There are other types of routes apart from square roots. A cube root of a number is a number search that if you multiplied 3 copies of it together you get the original number. A 4^th route is a number is a number search that if you rise to power of 4 you get the original number.

  You can use this information to find the square root of the product of a quotation of number of the numbers with square roots 3 and 5 respectively. So the positive square root of 9×25. It 3×5.

  The square root of a product the same as a product of square roots; square rate of rotation is the same as a quotation of square roots.