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प्रश्न
Find the square of `2"a"-1/"a"`
योग
उत्तर
`(2"a"-1/"a")^2=(2"a")^2+(1/"a")^2-2xx2"a"xx1/"a"`
`=4"a"^2+1/"a"^2-4`
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संबंधित प्रश्न
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(208)2
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(188)2
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78,95,210
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35,705
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89,99,988
The expanded form of the number is given. Write the number.
9,00,000 + 20,000 + 7000 + 800 + 5
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Write in standard form: 7 lakhs + 5 thousands + 4 tens + 3 ones
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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:
574021
