$$\left. \begin{array} { l } { ( 2 a + 3 ) ( 5 a - 4 ) } \\ { ( a + 3 ) ^ { 2 } } \end{array} \right.$$
$\left(5a-4\right)\left(2a+3\right)\left(a+3\right)^{2}$
$$\left(5a-4\right)\left(2a+3\right)\left(a+3\right)^{2}$$
$$10a^{4}+67a^{3}+120a^{2}-9a-108$$
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$\left(5a-4\right)\left(2a+3\right),\ \left(a+3\right)^{2}$