$$25ab-7bc-18ab-6cb; 5a-6b-13a-4b+11a$$
$b\left(3a-10b\right)\left(7a-13c\right)$
$$b\left(3a-10b\right)\left(7a-13c\right)$$
$$-70ab^{2}-39abc+21ba^{2}+130cb^{2}$$
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$b\left(7a-13c\right),\ 3a-10b$
