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प्रश्न
Find the square of `"x"+1/"x"-1`
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उत्तर
`("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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संबंधित प्रश्न
Find the square of x − 2y +1
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(92)2
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(188)2
Write the place value of the underlined digit.
78,95,210
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.
20,00,000 + 3,00,000 + 60,000 + 9000 + 500 + 10 + 7
Write the following numbers in standard notation.
200000 + 7000 + 7
Write the following numbers in expanded from.
1,45,70,004
Find the face value and place value of the digits coloured in the given numbers.
4038
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 |
