Find the value of (54) by column method
Answers
Answer:
The column method is a mathematical method of calculation where the numbers to be added or subtracted are set out above one another in columns. The calculation is done by 'carrying' and 'borrowing' numbers from column to column.
Cube by Column method
For finding the cube by column method use the following formula:-
(a + b) 3 = a 3 + 3a 2 b + 3ab 2 + b 3
In this method, first find the 2 digits of a number.
Example:
1) 32 3 , so here the two digits are 3 and 2.
2) 46 3 , two digits are 4 and 6.
Examples:-
1) Find 24 3 .
Solution: Here two digits are 2 and 4.
a = 2, and b = 4. By using the column-method:-
Column I
Column II
Column III
Column IV
a3
3 x a2 x b
3 x a x b2
b3
23 = 8
+ 5
3 x 22 x 4 = 48
+ 10
3 x 2 x 42 = 96
+ 6
43 = 64
13
58
102
4
13
8
2
4
Explanation:
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