MCQOPTIONS
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| 1. |
If \[\mathbf{x}+\mathbf{y}-\mathbf{5}=\mathbf{0}\] and \[\mathbf{2x+y-9=0,}\] then \[\mathbf{4}{{\mathbf{x}}^{\mathbf{2}}}\mathbf{+}{{\mathbf{y}}^{\mathbf{2}}}\mathbf{+4xy}\] is equal to |
| A. | 75 |
| B. | 85 |
| C. | 91 |
| D. | 81 |
| Answer» E. | |