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.


Discussion

No Comment Found

Related MCQs