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प्रश्न
If 
= 2x + 3, 
= `3/2x + 7` and 
= x – 3 then find the value of:
2
+ 
– 
उत्तर
Given, = 2x + 3, = `3/2` + 7 and = x – 3
2 + – = `2 xx (2 xx 6 + 3) + (3/2 xx 3 + 7) - (1 - 3)`
= `2 xx (12 + 3) + (9/2 + 7) - (-2)`
= `2 xx 15 + (23/2) + 2`
= `30 + 2 + 23/2`
= `32 + 23/2`
= `(32 xx 2 + 23)/2`
= `(64 + 23)/2`
= `87/2`
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संबंधित प्रश्न
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| S. No |
Expression |
Terms | |||||||||
| 1st | 2nd | 3rd | 4th | 5th | ... | 10th | ... | 100th | ... | ||
| 1 | 2n - 1 | 1 | 3 | 5 | 7 | 9 | - | 19 | - | - | - |
| 2 | 3n + 2 | 5 | 8 | 11 | 14 | - | - | - | - | - | - |
| 3 | 4n + 1 | 5 | 9 | 13 | 17 | - | - | - | - | - | - |
| 4 | 7n + 20 | 27 | 34 | 41 | 48 | - | - | - | - | - | - |
| 5 | n2 + 1 | 2 | 5 | 10 | 17 | - | - | - | - | 10001 | - |
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