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Question
Find the square of `"x"+1/"x"-1`
Sum
Solution
`("x"+1/"x"-1)^2=("x")^2+(1/"x")^2+(-1)^2+2xx"x"xx1/ "x"+2xx1/"x"xx(-1)+2(-1)xx"x"`
`="x"^2+1/"x"^2+1+2-2/"x"-2"x"`
`="x"^2+1/"x"^2+3-2/"x"-2"x"`
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Write the place name and place value of digit in the following number.
7,82,899
The expanded form of the number is given. Write the number.
9,00,000 + 20,000 + 7000 + 800 + 5
Write the following numbers in standard notation.
8000000 + 70000 + 3000 + 30 + 5
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
