Advertisements
Advertisements
प्रश्न
Evaluate using the expansion of (a + b)2 or (a – b)2:
(9.4)2
Advertisements
उत्तर
(9.4)2 = (10 − 0.6)2 ...[10 − 0.6 = 9.4]
(a − b)2 = a2 + 2ab − b2
= (10)2 + (0.6)2 − 2 (10) (0.6)
= 100 + 0.36 − 12
= 88 + 0.36
= 88.36
APPEARS IN
संबंधित प्रश्न
Find the square of 607
The expanded form of the number is given. Write the number.
9,00,000 + 20,000 + 7000 + 800 + 5
The expanded form of the number is given. Write the number.
7,00,000 + 80,000 + 4000 + 500
The expanded form of the number is given. Write the number.
80,00,000 + 50,000 + 1000 + 600 + 9
Write the following numbers in standard notation
30000 + 3000 + 300 + 30 + 3
Write the following numbers in standard notation.
8000000 + 70000 + 3000 + 30 + 5
Write the following numbers in standard notation.
4000000 + 400 + 4
Write the following numbers in expanded from.
1,45,70,004
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 |
Write in expanded form:
74836
