1. Factorise the expression by taking monomial commonly out

15 h + 3

\(=\)

i (i h + i)

[Note: Insert the constant factor in the first box followed by variable factor]

39 l^{4} m^{2} - 26 l m^{3} + 65 l^{5} m

\(=\) \(lm\)

(i l^{3} m - i m^{2} + i l^{4})

[Note: Insert the suitable coefficient in the answer box after factorising the expression]

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