Advertisements
Advertisements
Question
Expand : (a – 2b)2
Sum
Advertisements
Solution
(a – 2b)2 = (a)2 + (2b)2 − 2 × a × 2b ...[(a−b)2 = a2 + b2 − 2ab]
= a2 + 4b2 − 4ab
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Find the square of `"a"+1/(5"a")`
The expanded form of the number is given. Write the number.
7,00,000 + 80,000 + 4000 + 500
Write the following numbers in expanded from.
28,48,387
Find the face value and place value of the digits coloured in the given numbers.
1379
Find the face value and place value of the digits coloured in the given numbers.
5136
Find the face value and place value of the digits coloured in the given numbers.
8965
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 |
The expanded form of the number 9578 is ______.
Write in expanded form:
574021
