1. Factorise the expression by taking monomial commonly out

119 n + 17

\(=\)

i (i n + i)

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

21 s^{4} t^{2} - 14 s t^{3} + 35 s^{5} t

\(=\) \(st\)

(i s^{3} t - i t^{2} + i s^{4})

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

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