Square cube method
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Satish Kumar Nagarjan explains simple methods to find the square and cube of any two-digit number. For squaring a two-digit number like 37, he writes it as (3 7)2 and expands it using the formula (a + b)2 = a2 + 2ab + b2. For cubing a two-digit number like 37, he writes it as (3 7)3 and expands it using the formula (a + b)3 = a3 + 3a2b + 3ab2 + b3. He demonstrates these methods by calculating the square of 37 as 1369 and the cube of 37 as 50653.
Square cube method
- 1. SATISH SQUARE SIMPLE METHODS TO FOLLOW THE SQUARE OF ANY 2 DIGIT NUMBER IS EXPLAINED. Step 1: We all know that, ( a + b )2 = a2 + 2*a*b + b2 Step 2: take out the plus sign ( a b )2 = a2 2*a*b b2 Now I explain with the numbers, Take 2 digit number as 37, ( a = 3, b = 7 ) Now write as ( 3 7 )2 = 32 2*3*7 72 =09 42 49 =09 42 49 = 13 6 9 (37)2 = 1369 By SATISH KUMAR NAGARJAN
- 2. SATISH CUBE SIMPLE METHODS TO FOLLOW THE CUBE OF ANY 2 DIGIT NUMBER IS EXPLAINED. Step 1: We all know that, ( a + b )3 = a3 + 3*a2 *b + 3*a*b2 + b3 Step 2: take out the plus sign ( a b )3 = a3 3*a2 *b 3*a*b2 b3 Now I explain with the numbers, Take 2 digit number as 37, ( a = 3, b = 7 ) Now write as ( 3 7 )3 = 13 3*12 *2 3*1*22 23 = 01 06 12 08 =01 06 12 08 = 50 6 5 3 (37)3 = 50653 BY SATISH KUMAR NAGARAJAN