Question
Factorise : $x^2+9 x+18$
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| Expenses | Accommodation | Food | Clothing | Travel | Miscellaneous | saving |
| Amount $(Rs.)$ | $12000$ | $9000$ | $2500$ | $7500$ | $4000$ | $15000$ |
| Diameter of heart (in mm) | 120 | 121 | 122 | 123 | 124 | 125 |
| Number of patients | 7 | 9 | 15 | 12 | 6 | 11 |