Advertisements
Advertisements
प्रश्न
Find the square of 391
योग
Advertisements
उत्तर
(391)2 = (400 − 9)2
= (400)2 + 92 + 2 (400) (9)
= 160000 + 81 − 7200
= 152881
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Expand : (2a + b)2
Find the square of 2x − 5y
Find the square of `2"x"+1/"x"+1`
Evaluate using the expansion of (a + b)2 or (a – b)2:
(9.4)2
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(20.7)2
Write the place value of the underlined digit.
3,52,749
Write the place value of the underlined digit.
89,99,988
Represent given values in Abacus.
3 Ten crores, 7 crores, 6 ten lakhs, 7 lakhs, 4 tens and 7 ones.
Find the face value and place value of the digits coloured in the given numbers.
2010
Complete the given table.
| Number | Expanded Form | |
| a | 6785 | |
| b | 4000 + 200 + 90 + 6 | |
| c | 3000 + 300 + 20 + 7 | |
| d | 9999 | |
| e | 5000 + 70 + 1 | |
| f | 2934 |
