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Maths FROM 2
Chap2: Number patterns
Square and cube rootsSquare roots
If “s” is a number and “e” is its equal factor, then we say “e” is square root of “s” and write
e = s
Ex: Find the square root of 36 and 25
|
2 |
36 |
|
2 |
18 |
|
3 |
9 |
|
3 |
3 |
|
|
1 |
|
5 |
25 |
|
5 |
5 |
|
|
1 |
=5
=2*3=6
Cube roots
Note that 2*2*2=8. We note that 2 is the cube root of 8. Similarly, 3 is the cube root of 27. We denote the root of a number “n” by 3n
= n1/3
Ex: find the cube root of the following
a) 349
= 43 = 64, b) 364
= 333
= 3
par Claude Foumtum