Question

find the square of the following numbers without multiplication 23

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Answer 1

Answer:

529

Step-by-step explanation:

23*23=23^2=529

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Answer 2

Consider the given number.

39

 

We know that

(a−b)2=a2+b2−2ab

 

Therefore,

(40−1)2=(40)2+12−2×40×1

(39)2=1600+1−80

(39)2=1521

 

Hence, this is the answer.