If \[\mathbf{a}+\mathbf{b}=\mathbf{7}\]and \[\mathbf{ab}=\mathbf{12}\] then what is the value of \[{{\mathbf{a}}^{\mathbf{2}}}-\mathbf{ab}-{{\mathbf{b}}^{\mathbf{2}}}\]

If \[\mathbf{a}+\mathbf{b}=\mathbf{7}\]and \[\mathbf{ab}=\mathbf{12}\]

1.	If \[\mathbf{a}+\mathbf{b}=\mathbf{7}\]and \[\mathbf{ab}=\mathbf{12}\] then what is the value of \[{{\mathbf{a}}^{\mathbf{2}}}-\mathbf{ab}-{{\mathbf{b}}^{\mathbf{2}}}\]
A.	12
B.	13
C.	14
D.	\[-\]5
Answer» E.