$$(1.2M-0.5L)(1.2M-0.2L)$$
$\frac{6M-L}{5}\left(\frac{6M}{5}-\frac{L}{2}\right)$
$$1.44M^{2}-0.24ML-0.6LM+0.1L^{2}$$
$$1.44M^{2}-0.84ML+0.1L^{2}$$
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$-\frac{21LM}{25}+\frac{36M^{2}}{25}+\frac{L^{2}}{10}$
