Find the value of each of the following, using the column method:
2. (35)²
4. (96)²
3. (52)²
4.(96)²
Answers
Answer:
Step-by-step explanation:
Given number =52
By using column method we have.
∴a=5 and b=2
a
2
(2×a×b) b
2
25 20
4
+2 +0
=27 =2
0
⇒52
2
=2704
Steps involved in solving column method:
Step 1: Make three columns headed by a
2
,2×a×b and b
2
respectively. Write the values of a
2
,2×a×b and b
2
in columns respectively.
Step 2: In the third column underline the unit digits of b
2
i.e 4 and carry the tens digit of it i.e. 0 to the second column and add it to the value of the second column is 2×a×b and it will remain 20 if it added to 0.
Step 3: In column second, underline the unit digit of the number obtained in the second step i.e. 0 and carry over the tens digit of it to the first column and add it to the value of a
2
i.e. 25+2=27
Step 4: Now underline the number obtained in the third step in the first column i.e. 27. The underlined digits give the required square number.
do the others like this
Answer:
Step-by-step explanation:
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