Saturday, May 11

About Square Root


Square root of a number it can be represented by `sqrt(y)` . The square root of number is also written as exponent form `sqrt(y)` which is equal to y1/2
                Square root of a number 25 which is equal to `sqrt(25)` =251/2=5.
                In this article we shall discuss about the some square roots of the numbers.

Square root table


                The following table shows the square root of the some numbers.
                Number (x)        square (x2)          Square root (x1/2)
                1                              1                              1.000
                2                              4                              1.414
                3                              9                              1.732
                4                              16                           2.000
                5                              25                           2.236
                6                              36                           2.449
                7                              49                           2.646 
                8                              64                           2.828 
                9                              81                           3.000 
                10                           100                           3.162

Problem 1:


Find the Square root value of 150
Solution:
                Write prime factors for 150 = 2 * 3 * 5 * 5
                `sqrt(150)` = `sqrt(2 * 3 * 5 * 5)`
                                   = `sqrt(2 * 3 * 5^2)`
             `sqrt(2 * 3 * 5^2) ` we can written as (2 * 3 * 52)1/2
                (2 * 3 * 52)1/2      By using algebraic property (a*b)m =am * bm
                        (2 * 3)1/2 * (52*1/2)
                5 (2 * 3)1/2
                        Square root value of 150= 5 `sqrt(6)`

Problem 2:
Find the Square root value of 300
Solution:
                Write prime factors for 300 = 2 * 2 * 3 * 5 * 5
                `sqrt(300)` = `sqrt(2 * 2 * 3 * 5 * 5)`            
                                   = sqrt(2^2 * 3 * 5^2)
                `sqrt(2^2 * 3 * 5^2)` we can written as (2 * 3 * 52)1/2
                (22 * 3 * 52)1/2     By using algebraic property (a*b)m =am * bm
                        (3)1/2 * (22*1/2 * 52*1/2)
                5 * 2 (3)1/2
                        Square root value of 300=10 `sqrt(3)`

Problem 3:
Find the Square root value of 625
Solution:
                Write prime factors for 625 = 5 * 5 * 5 * 5
                `sqrt(625) ` = `sqrt(5 * 5 * 5 * 5)`   
                                   = `sqrt(5^2 * 5^2)`
                `sqrt(5^2 * 5^2)` we can written as (52 * 52)1/2          
                (52 * 52)1/2            By using algebraic property (a*b)m =am * bm
                        (52)1/2 * (52*1/2)
                5 * 5
                        Square root value of 625= 25

Problem 4:
Find the Square root value of 75
Solution:
                Write prime factors for 75 = 3 * 5 * 5
                `sqrt(75)` = `sqrt(3*5*5)`
                                   = `sqrt(3*5^2)`
                `sqrt(3*5^2)` we can written as (3*52)1/2 
                (3*52)1/2               By using algebraic property (a*b)m =am * bm
                        (3)1/2 * (52*1/2)
                5 (3)1/2
                        Square root value of 75= 5 `sqrt(3)`

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