$$\left. \begin{array} { l } { 1.1 } \\ { ( 3 - 2 b ) ( 5 + 4 b ) } \\ { ( 2 m + 1 ) ^ { 2 } } \end{array} \right.$$
$1.1,\ \left(3-2b\right)\left(4b+5\right),\ \left(2m+1\right)^{2}$
